J/ApJ/776/71 ZENS: galaxies in groups along the cosmic web. I. (Carollo+, 2013)
The Zurich Environmental Study of galaxies in groups along the cosmic web.
I. Which environment affects galaxy evolution?
Carollo C.M., Cibinel A., Lilly S.J., Miniati F., Norberg P.,
Silverman J.D., van Gorkom J., Cameron E., Finoguenov A., Peng Y.,
Pipino A., Rudick C.S.
<Astrophys. J., 776, 71 (2013)>
=2013ApJ...776...71C 2013ApJ...776...71C
ADC_Keywords: Galaxies, photometry ; Morphology ; Clusters, galaxy
Keywords: galaxies: evolution; galaxies: formation; galaxies: groups: general
galaxies: star formation; galaxies: stellar content
galaxies: structure
Abstract:
The Zurich Environmental Study (ZENS) is based on a sample of ∼1500
galaxy members of 141 groups in the mass range ∼1012.5-14.5M☉
within the narrow redshift range 0.05<z<0.0585. ZENS adopts novel
approaches, described here, to quantify four different galactic
environments, namely: (1) the mass of the host group halo; (2) the
projected halo-centric distance; (3) the rank of galaxies as central
or satellites within their group halos; and (4) the filamentary
large-scale structure density. No self-consistent identification of a
central galaxy is found in ∼40% of <1013.5M☉ groups, from
which we estimate that ∼15% of groups at these masses are dynamically
unrelaxed systems. Central galaxies in relaxed and unrelaxed groups
generally have similar properties, suggesting that centrals are
regulated by their mass and not by their environment. Centrals in
relaxed groups have, however, ∼30% larger sizes than in unrelaxed
groups, possibly due to accretion of small satellites in virialized
group halos. At M>1010M☉, satellite galaxies in relaxed and
unrelaxed groups have similar size, color, and (specific) star
formation rate distributions; at lower galaxy masses, satellites are
marginally redder in relaxed relative to unrelaxed groups, suggesting
quenching of star formation in low-mass satellites by physical
processes active in relaxed halos. Overall, relaxed and unrelaxed
groups show similar stellar mass populations, likely indicating
similar stellar mass conversion efficiencies.
Description:
The entire ZENS sample of 141 galaxy groups was selected from the
2PIGG catalog (Eke et al. 2004, J/MNRAS/348/866), which is based on a
friends-of-friends (FOF; Huchra & Geller 1982, VII/86) percolation
algorithm thoroughly tested on realistic mock galaxy catalogs
generated from cosmological N-body simulations. The 2PIGG catalog
covers 1500deg2 of the 2dFGRS (Colless+, 2001, VII/250).
The data were taken in several observing runs over the period
2005-2009. Following a pilot-project time allocation in 2005, most of
the observations were carried out as service-mode observations in the
context of the ESO Large Program 177.A-0680. Paper II (Cibinel+,
2013ApJ...776...72C 2013ApJ...776...72C) provides details of the observing runs, the raw
data properties, the data reduction procedures, and the photometric
calibration for WFI data of the ZENS groups.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 93 141 Coordinates, properties, and large-scale
structure (LSS) environment of the ZENS groups
table4.dat 2033 1656 The ZENS catalog of structural, photometric and
environmental properties for the sample galaxies
--------------------------------------------------------------------------------
See also:
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)
VII/86 : Groups of Galaxies. I. Nearby Groups (Huchra+ 1982)
J/ApJ/751/50 : Galaxy groups from DEEP2 Redshift Survey (Gerke+ 2012)
J/A+A/540/A106 : SDSS-DR8 groups and clusters of galaxies (Tempel+, 2012)
J/MNRAS/416/727 : Padova-Millennium Galaxy and Group Catalogue (Calvi+, 2011)
J/MNRAS/405/783 : Passive red spirals in Galaxy Zoo (Masters+, 2010)
J/A+A/514/A102 : SDSS DR7 groups of galaxies (Tago+, 2010)
J/MNRAS/398/1129 : Central galaxies in groups and clusters (Guo+, 2009)
J/ApJ/697/1842 : zCOSMOS 10K sample group catalog to z=1 (Knobel+, 2009)
J/MNRAS/395/255 : Compact groups of galaxies in SDSS DR6 (McConnachie+, 2009)
J/A+A/479/927 : Group of galaxies in SDSS 5 (Tago+, 2008)
J/ApJ/658/960 : SB profiles of 9 late-type disk galaxies (Carollo+, 2007)
J/AJ/133/791 : Spitzer phot. of normal+interacting galaxies (Smith+, 2007)
J/ApJS/167/1 : Galaxy groups and clusters from SDSS (Berlind+, 2006)
J/ApJ/625/6 : Galaxy groups in the DEEP2 GRS (Gerke+, 2005)
J/AJ/127/1811 : Catalog of SDSS compact groups of galaxies (Lee+, 2004)
J/MNRAS/352/939 : 2dFGRS Wiener reconstruction of cosmic web (Erdogdu+, 2004)
J/MNRAS/348/866 : 2dFGRS Percolation-Inferred Galaxy Group (2PIGG) (Eke+, 2004)
J/MNRAS/318/703 : H-alpha in Abell 2390 (Balogh+ 2000)
J/ApJS/126/209 : Bright SHARC survey cluster catalog (Romer+, 2000)
http://www.astro.ethz.ch/carollo/research/zens.html : ZENS project home page
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 I1 --- Run [1/6] Observing run (1)
3- 8 A6 --- --- [2PIGG-]
9- 13 A5 --- Group Group ID (n1267-n1829 for the Northern
Galactic Hemisphere or s1248-s1935 for
the Southern groups)
15 A1 --- f_Group [a] Fossil group (2)
17- 18 I2 h RAh Hour of right ascension (B1950)
20- 21 I2 min RAm Minute of right ascension (B1950)
23- 27 F5.2 s RAs Second of right ascension (B1950)
29 A1 --- DE- Sign of declination (B1950)
30- 31 I2 deg DEd Degree of declination (B1950)
33- 34 I2 arcmin DEm Arcminute of declination (B1950)
36- 39 F4.1 arcsec DEs Arcsecond of declination (B1950)
41- 47 F7.5 --- zgr [0.05/0.06] 2dFGRS redshift
49- 53 F5.3 Mpc Rrms [0.1/1.9] 2PIGG rms radius
55- 59 F5.3 Mpc R200 [0.2/1.8] Group size r{hat}200
61- 65 F5.1 km/s sigma [-70/692] 2PIGG velocity dispersion (3)
67- 73 F7.3 10+10Lsun Lgr [2.1/201] Total group luminosity
75- 77 I3 --- Nm [5/159] Number of members (4)
79- 85 F7.3 10+12Msun Mgr [1.4/667] Total group mass
87- 91 F5.2 [-] dLSS [-0.6/1.9] Value of LSS overdensity (5)
93 I1 --- qLSS [1/4] Overdensity quartile to which the
groups belong (6)
--------------------------------------------------------------------------------
Note (1): The observing run during which the WFI B- and I-band imaging was
acquired for a given group; see Paper II (Cibinel et al.
2013ApJ...776...72C 2013ApJ...776...72C).
Note (2):
a = groups that satisfy the criterion for being "fossil" according to the
definition presented in Section 2.4.
Note (3): Groups that have a velocity dispersion derived with the gapper
estimator that is smaller than the typical 2dFGRS redshift error
(∼70-85km/s) have null σ values in the original 2PIGG catalog
(see Equation (4.6) in Eke et al. 2004, J/MNRAS/348/866). For these
groups, the entry in the column for σ lists "-70," i.e., the
velocity dispersion is set equal to the 2dFGRS redshift error of
70km/s at z∼0.05 and the minus sign is used as a flag to identify the
groups in question.
Note (4): Number of members above the magnitude limit of the survey.
Note (5): The value of LSS overdensity calculated with our fifth-nearest-group
algorithm (log(1+δLSS)).
Note (6): The overdensity quartile to which the groups belong relative to the
global distribution of overdensities in the redshift window
0.035<z<0.075 (with the first and fourth quartile indicating regions
of the lowest and highest environmental density, respectively).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- --- [2PIGG_]
7- 11 A5 --- Group Group identification (GroupID) (1)
13- 22 A10 --- 2dFGRS Galaxy 2dFGRS identification (29 galaxies
"99999" without 2dFGRS ID) (2dFID)
24- 35 A12 --- --- 2PIGGGroup
36- 38 A3 --- ID Galaxy identification in ZENS
(2PIGG{Group}NNA) (ZENSID)
40- 46 F7.5 --- zgr [0.05/0.06] Group redshift (groupz)
48- 57 F10.6 deg RAdeg Right Ascension (J2000)
59- 68 F10.6 deg DEdeg Declination (J2000)
70- 76 F7.5 --- z [0.04/0.07] Galaxy 2dFGRS heliocentric
redshift (VII/250) (galz)
78- 82 F5.3 --- wComp [0.6/1] Galaxy completeness weight (2)
84- 88 F5.3 Mpc Rrms [0.1/1.9] Group rms radius from 2PIGG catalog
(RmsRad)
90- 94 F5.3 Mpc R200 [0.2/1.8] Group R200 radius (3)
96- 100 F5.1 km/s sigma [-70/692] Group velocity dispersion σ
from 2PIGG catalog (J/MNRAS/348/866)
102- 111 E10.4 Lsun Lgr Group luminosity as in Eke et al.
(2004MNRAS.355..769E 2004MNRAS.355..769E) (RmsRad)
113- 115 I3 --- Nm [5/159] Group richness from 2PIGG catalog
(Eke et al. 2004, J/MNRAS/348/866) (Nmemb)
117- 126 E10.4 Msun Mgr Group mass MGROUP (Mgroup)
128- 133 F6.3 [-] dLSS [-0.6/1.9] Large scale overdensity
δ-LSS (DeltaLSS) (4)
135 I1 --- qLSS [1/4] Quartile large scale overdensity (5)
137 I1 --- fr [0/2] Group dynamical status (RelaxFlag) (6)
139 I1 --- fc [0/2] Flag identifying central galaxy and
group center (cenFlag) (7)
141- 145 F5.3 --- dR200 [0/4.7] Galaxy distance from group center
in units of R200
147- 156 E10.4 Msun Mbest Galaxy mass from ZEBRA+ best-fit template
(MassBest) (8)
158- 168 E11.4 Msun b_Mbest ?=-99 Lower limit on Mbest (erMassBest) (9)
170- 180 E11.4 Msun B_Mbest ?=-99 Upper limit on Mbest (ErMassBest) (9)
182- 191 E10.4 Msun Mmed ZEBRA+ median likelihood galaxy mass
(MassMedian)
193- 202 E10.4 Msun Mp16 The 16th percentile of the ZEBRA+ galaxy mass
likelihood distribution (MassP16)
204- 213 E10.4 Msun Mp84 The 84th percentile of the ZEBRA+ galaxy mass
likelihood distribution (MassP84)
215- 225 E11.4 Msun MmaxL ?=-99 ZEBRA+ maximum likelihood galaxy mass
(maxLMass)
227- 229 I3 --- TT [0/5]?=-99 Morphological type (MType) (10)
231- 235 F5.1 --- fM ?=-99 Merger flag (MergerFlag) (11)
237- 242 F6.2 --- nI [0.3/10]?=-99 Galaxy GIM2D I-band raw Sersic
index from single Sersic fit
244- 249 F6.2 --- e_nI [0/1.1]?=-99 GIM2D formal 99% confidence
lower error on nI (ernI)
251- 256 F6.2 --- E_nI [0/0.9]?=-99 GIM2D formal 99% confidence
upper error on nI (ErnI)
258- 263 F6.2 --- nB [0.2/10]?=-99 Galaxy GIM2D B-band raw Sersic
index from single Sersic fit
265- 270 F6.2 --- e_nB [0/1]?=-99 GIM2D formal 99% confidence lower
error on nB (ernB)
272- 277 F6.2 --- E_nB [0/1]?=-99 GIM2D formal 99% confidence upper
error on nB (ErnB)
279- 284 F6.2 --- nIc [0.3/10]?=-99 Galaxy GIM2D I-band corrected
Sersic index from single Sersic fit
(nIcorr) (12)
286- 291 F6.2 --- nBc [0.2/10]?=-99 Galaxy GIM2D B-band corrected
Sersic index from single Sersic fit
(nBcorr) (12)
293- 299 F7.3 kpc gReI [0.8/36]?=-99 Galaxy GIM2D I-band raw
half-light radius from single Sersic
fit; semi-major axis
301- 307 F7.3 kpc e_gReI [0/1.6]?=-99 GIM2D formal 99% confidence
lower error on gReI (ergReI)
309- 315 F7.3 kpc E_gReI [0/1.6]?=-99 GIM2D formal 99% confidence
upper error on gReI (ErgReI)
317- 323 F7.3 kpc DgReI [0/14]?=-99 Single vs double component
scatter on I-band half-light
semi-major axis (Delta-gReI) (13)
325- 331 F7.3 kpc gReB [0.9/50]?=-99 Galaxy GIM2D B-band raw
half-light radius from single Sersic
fit; semi-major axis
333- 339 F7.3 kpc e_gReB [0/1.6]?=-99 GIM2D formal 99% confidence
lower error on gReB (ergReB)
341- 347 F7.3 kpc E_gReB [0/1.6]?=-99 GIM2D formal 99% confidence
upper error on gReB (ErgReB)
349- 355 F7.3 kpc DgReB [0/19]?=-99 Single vs double component
scatter on B-band half-light
semi-major axis (Delta-gReB) (13)
357- 363 F7.3 kpc gReIc [0.8/39]?=-99 Galaxy GIM2D I-band corrected
half-light radius from single Sersic fit;
semi-major axis (gReIcorr) (12)
365- 371 F7.3 kpc gReBc [0.8/50]?=-99 Galaxy GIM2D B-band corrected
half-light radius from single Sersic fit;
semi-major axis (gReBcorr) (12)
373- 379 F7.3 --- gEllI [0/1]?=-99 Galaxy GIM2D I-band raw
ellipticity from single Sersic fit
(gEllipI)
381- 387 F7.3 --- e_gEllI [0/1]?=-99 GIM2D formal 99% confidence lower
error on gEllI (ergEllipI)
389- 395 F7.3 --- E_gEllI [0/1]?=-99 GIM2D formal 99% confidence upper
error on gEllI (ErgEllipI)
397- 403 F7.3 --- gEllB [0/1]?=-99 Galaxy GIM2D B-band raw
ellipticity from single Sersic fit
(gEllipB)
405- 411 F7.3 --- e_gEllB [0/1]?=-99 GIM2D formal 99% confidence lower
error on gEllB (ergEllipB)
413- 419 F7.3 --- E_gEllB [0/1]?=-99 GIM2D formal 99% confidence upper
error on gEllB (ErgEllipB)
421- 427 F7.3 --- gEllIc [0/1]?=-99 Galaxy GIM2D I-band corrected
ellipticity from single Sersic fit (12)
429- 435 F7.3 --- gEllBc [0/1]?=-99 Galaxy GIM2D B-band corrected
ellipticity from single Sersic fit
(gEllipBcorr) (12)
437- 443 F7.3 kpc dI-tot [0.5/7.1]?=-99 Galaxy GIM2D I-band disk
scale-length from pure exponential fit;
semi-major axis (diskhI-tot) (14)
445- 451 F7.3 kpc e_dI-tot [0/0.3]?=-99 GIM2D formal 99% confidence
lower error on dI-tot (erdiskhI-tot)
453- 459 F7.3 kpc E_dI-tot [0/0.3]?=-99 GIM2D formal 99% confidence
upper error on dI-tot (ErdiskhI-tot)
461- 467 F7.3 kpc dB-tot [0.6/11]?=-99 Galaxy GIM2D B-band disk
scale-length from pure exponential fit:
semi-major axis (diskhB-tot) (14)
469- 475 F7.3 kpc e_dB-tot [0/0.3]?=-99 GIM2D formal 99% confidence
lower error on dB-tot (erdiskhB-tot)
477- 483 F7.3 kpc E_dB-tot [0/0.3]?=-99 GIM2D formal 99% confidence
upper error on dB-tot (ErdiskhB-tot)
485- 487 I3 --- tI [0/1]?=-99 GIM2D vs. Galfit flag for I-band
bulge+disk decomposition (tDecompI) (15)
489- 491 I3 --- tB [0/5]?=-99 GIM2D vs. Galfit Flag for B-band
bulge+disk decomposition (tDecompB) (15)
493- 500 F8.4 --- bT-I [-98/1]?=-99 I-band bulge-to-total ratio
from bulge+disk decomposition (BTI) (16)
502- 509 F8.4 --- e_bT-I [0/1]?=-99 Formal 99% confidence lower
error on bT-I (erBTI)
511- 518 F8.4 --- E_bT-I [0/1]?=-99 Formal 99% confidence upper
error on bT-I (ErBTI)
520- 527 F8.4 --- bT-B [-98/1]?=-99 B-band bulge-to-total ratio from
bulge+disk decomposition (BTB) (16)
529- 536 F8.4 --- e_bT-B [0/1]?=-99 Formal 99% confidence lower
error on bT-B (erBTB)
538- 545 F8.4 --- E_bT-B [0/1]?=-99 Formal 99% confidence upper
error on bT-B (erBTB)
547- 553 F7.3 kpc bRe-I [-98/12]?=-99 I-band bulge effective radius
from bulge+disk decomposition;
semi-major axis (bulgeRe-I) (16)
555- 561 F7.3 kpc e_bRe-I [0/4]?=-99 Formal 99% confidence lower
error on bRe-I (erbulgeRe-I)
563- 569 F7.3 kpc E_bRe-I [0/4]?=-99 Formal 99% confidence upper
error on bRe-I (ErbulgeRe-I)
571- 577 F7.3 kpc bRe-B [-98/20]?=-99B-band bulge effective radius
from bulge+disk decomposition;
semi-major axis (bulgeRe-B) (16)
579- 585 F7.3 kpc e_bRe-B [0/9]?=-99 Formal 99% confidence lower
error on bRe-B (erbulgeRe-B)
587- 593 F7.3 kpc E_bRe-B [0/9]?=-99 Formal 99% confidence upper
error on bRe-B (ErbulgeRe-B)
595- 601 F7.3 kpc dh-I [-98/20]?=-99 I-band disk scale-length from
bulge+disk decomposition;
semi-major axis (diskh-I) (16)
603- 609 F7.3 kpc e_dh-I [0/4]?=-99 Formal 99% confidence lower
error on dh-I (erdiskh-I)
611- 617 F7.3 kpc E_dh-I [0/4]?=-99 Formal 99% confidence upper
error on dh-I (Erdiskh-I)
619- 625 F7.3 kpc dh-B [-98/20]?=-99 B-band disk scale-length from
bulge+disk decomposition;
semi-major axis (diskh-B) (16)
627- 633 F7.3 kpc e_dh-B [0/2]?=-99 Formal 99% confidence lower
error on dh-B (erdiskh-B)
635- 641 F7.3 kpc E_dh-B [0/2]?=-99 Formal 99% confidence upper
error on dh-B (Erdiskh-B)
643- 649 F7.3 --- nb-I [-98/10]?=-99 I-band bulge Sersic index from
bulge+disk decomposition (nBulge-I) (16)
651- 657 F7.3 --- e_nb-I [0/10]?=-99 Formal 99% confidence lower
error on nb-I (ernBulge-I)
659- 665 F7.3 --- E_nb-I [0/10]?=-99 Formal 99% confidence upper
error on nb-I (ErnBulge-I)
667- 673 F7.3 --- nb-B [-98/10]?=-99 B-band bulge Sersic index from
bulge+disk decomposition (nBulge-B) (16)
675- 681 F7.3 --- e_nb-B [0/5]?=-99 Formal 99% confidence lower
error on nb-B (ernBulge-B)
683- 689 F7.3 --- E_nb-B [0/5]?=-99 Formal 99% confidence upper
error on nb-B (ErnBulge-B)
691- 697 F7.3 --- ellb-I [-98/1]?=-99 I-band bulge ellipticity from
bulge+disk decomposition (ellBulge-I) (16)
699- 705 F7.3 --- e_ellb-I [0/1]?=-99 Formal 99% confidence lower
error on ellb-I (erellBulge-I)
707- 713 F7.3 --- E_ellb-I [0/1]?=-99 Formal 99% confidence upper
error on ellb-I (ErellBulge-I)
715- 721 F7.3 --- ellb-B [-98/1]?=-99 B-band bulge ellipticity from
bulge+disk decomposition (ellBulge-B) (16)
723- 729 F7.3 --- e_ellb-B [0/1]?=-99 Formal 99% confidence lower
error on ellb-B (erellBulge-B)
731- 737 F7.3 --- E_ellb-B [0/1]?=-99 Formal 99% confidence upper
error on ellb-B (ErellBulge-B)
739- 745 F7.3 deg di-I [-98/90]?=-99 I-band disk inclination from
bulge+disk decomposition (diskInc-I) (16)
747- 753 F7.3 deg e_di-I [0/45]?=-99 Formal 99% confidence lower
error on di-I (erdiskInc-I)
755- 761 F7.3 deg E_di-I [0/45]?=-99 Formal 99% confidence upper
error on di-I (ErdiskInc-I)
763- 769 F7.3 deg di-B [-98/90]?=-99 B-band disk inclination from
bulge+disk decomposition (diskInc-B) (16)
771- 777 F7.3 deg e_di-B [0/45]?=-99 Formal 99% confidence lower
error on di-B (erdiskInc-B)
779- 785 F7.3 deg E_di-B [0/45]?=-99 Formal 99% confidence upper
error on di-B (ErdiskInc-B)
787- 793 F7.3 kpc bdReI [0.8/23]?=-99 I-band global galaxy half-light
radius from bulge+disk decomposition;
semi-major axis (ReI-decomp) (17)
795- 801 F7.3 kpc bdReB [0.8/27]?=-99 B-band global galaxy half-light
radius from bulge+disk decomposition;
semi-major axis (ReB-decomp) (17)
803- 809 F7.3 kpc zReI [0.8/21]?=-99 ZEST+ I-band raw half-light
radius; semi-major axis
811- 817 F7.3 kpc zReB [0.9/23.1]?=-99 ZEST+ B-band raw half-light
radius; semi-major axis
819- 825 F7.3 kpc zReIc [0.6/29]?=-99 ZEST+ I-band corrected
half-light radius; semi-major axis
(zReIcorr) (12)
827- 833 F7.3 kpc zReBc [0.6/29]?=-99 ZEST+ B-band corrected
half-light radius; semi-major axis
(zReBcorr) (12)
835- 841 F7.3 --- zEllI [0/1]?=-99 SEXTRACTOR/ZEST+ I-band raw
ellipticity (zEllipI)
843- 849 F7.3 --- zEllB [0/1]?=-99 SEXTRACTOR/ZEST+ B-band raw
ellipticity (zEllipB)
851- 857 F7.3 --- zEllIc [0/1]?=-99 SEXTRACTOR/ZEST+ I-band corrected
ellipticity (zEllipIcorr) (12)
859- 865 F7.3 --- zEllBc [0/1]?=-99 SEXTRACTOR/ZEST+ B-band corrected
ellipticity (zEllipBcorr) (12)
867- 873 F7.3 --- CI [1.3/5]?=-99 ZEST+ I-band raw Concentration
index
875- 881 F7.3 --- CB [1.3/5]?=-99 ZEST+ B-band raw Concentration
index
883- 889 F7.3 --- CIc [1.3/5.4]?=-99 ZEST+ I-band corrected
Concentration index (CIcorr) (18)
891- 897 F7.3 --- CBc [1.3/5.4]?=-99 ZEST+ B-band corrected
Concentration index (CBcorr) (18)
899- 905 F7.3 --- GiniI [0/1]?=-99 ZEST+ I-band raw Gini index
907- 913 F7.3 --- GiniB [0/1]?=-99 ZEST+ B-band raw Gini index
915- 921 F7.3 --- GiniIc [0/1]?=-99 ZEST+ I-band corrected Gini
index (GiniIcorr) (18)
923- 929 F7.3 --- GiniBc [0/1]?=-99 ZEST+ B-band corrected Gini
index (GiniBcorr) (18)
931- 937 F7.3 --- M20I [-3/99]?=-99 ZEST+ I-band raw M20 index (41)
939- 945 F7.3 --- M20B [-3/99]?=-99 ZEST+ B-band raw M20 index (41)
947- 953 F7.3 --- M20Ic [-3.1/99]?=-99 ZEST+ I-band corrected M20
index (M20Icorr) (18)(41)
955- 961 F7.3 --- M20Bc [-3/99]?=-99 ZEST+ B-band corrected M20
index (M20Bcorr) (18)(41)
963- 970 F8.4 --- AsymI [0/1]?=-99 ZEST+ I-band raw asymmetry index
972- 979 F8.4 --- AsymB [0/1]?=-99 ZEST+ B-band raw asymmetry index
981- 988 F8.4 --- SI [0/1]?=-99 ZEST+ I-band raw smoothness index
990- 997 F8.4 --- SB [0/1]?=-99 ZEST+ B-band raw smoothness index
999-1005 F7.3 kpc RpI [2/47]?=-99 SEXTRACTOR I-Band Petrosian
radius; semi-major axis (19)
1007-1013 F7.3 kpc RpB [2/53]?=-99 SEXTRACTOR B-Band Petrosian
radius; semi-major axis (19)
1015-1021 F7.3 kpc RkI [3/56]?=-99 SEXTRACTOR I-band Kron aperture;
semi-major axis (20)
1023-1029 F7.3 kpc RkB [3/69]?=-99 SEXTRACTOR B-band Kron aperture;
semi-major axis (20)
1031-1033 I3 --- fB [0/1]?=-99 Bar Flag (BarType) (21)
1035-1041 F7.3 kpc aBar [2/17]?=-99 Bar semi-major axis
1043-1048 F6.2 --- fBar [0/1]?=-99 Bar strength
1050-1052 I3 --- SpT [0/2]?=-99 Spectral type (SpType) (22)
1054 I1 --- fSF [0/3] Dusty star-forming or post starburst
flag (Dust-SBFlag) (23)
1056-1063 F8.4 Msun/yr SFRbest ?=-99 Star-formation rate from ZEBRA+
best-fit template (SFRBest) (24)
1065-1072 F8.4 Msun/yr b_SFRbest ?=-99 Lower limit on SFRbest (erSFRBest) (9)
1074-1081 F8.4 Msun/yr B_SFRbest ?=-99 Upper limit on SFRbest (ErSFRBest) (9)
1083-1090 F8.4 Msun/yr SFRmed ?=-99 ZEBRA+ median likelihood SFR
(SFRMedian)
1092-1099 F8.4 Msun/yr SFR16 ?=-99 The 16th percentile of the ZEBRA+
SFR likelihood distribution (SFRP16)
1101-1108 F8.4 Msun/yr SFR84 ?=-99 The 84th percentile of the ZEBRA+
SFR likelihood distribution (SFRP84)
1110-1117 F8.4 Msun/yr SFRmaxL ?=-99 ZEBRA+ maximum likelihood SFR (maxLSFR)
1119-1129 E11.4 yr-1 sSFRbest ?=-99 Specific star-formation rate from
ZEBRA+ best-fit template (sSFRBest) (24)
1131-1140 E10.4 yr-1 b_sSFRbest ?=5e-15 Lower limit on sSFRbest
(ersSFRBest) (9)
1142-1151 E10.4 yr-1 B_sSFRbest Upper limit on sSFRbest (ErsSFRBest) (9)
1153-1163 E11.4 yr-1 sSFRmed ?=-99 ZEBRA+ median likelihood specific
star-formation rate (sSFRMedian)
1165-1175 E11.4 yr-1 sSFRP16 ?=-99 The 16th percentile of the ZEBRA+
sSFR likelihood distribution (sSFRP16)
1177-1187 E11.4 yr-1 sSFRP84 ?=-99 The 84th percentile of the ZEBRA+
sSFR likelihood distribution (sSFRP84)
1189-1199 E11.4 yr-1 sSFRmaxL ?=-99 ZEBRA+ maximum likelihood sSFR
(maxLsSFR)
1201-1208 F8.4 mag kcorr-B [-0.06/0.3]?=-99 ZEBRA+ B-band k-correction
1210-1217 F8.4 mag kcorr-I [-0.06/0.2]?=-99 ZEBRA+ I-band k-correction
1219-1225 F7.3 mag oBmag ?=-99 Galaxy Petrosian apparent B-band
magnitude; observer-frame (25)
1227-1233 F7.3 mag rBmag ?=-99 Galaxy Petrosian apparent B-band
magnitude; rest-frame (25)
1235-1241 F7.3 mag e_rBmag ?=-99 Error on rBmag (errBmag)
1243-1249 F7.3 mag BMag ?=-99 Absolute galaxy Petrosian B-band
magnitude
1251-1257 F7.3 mag oImag ?=-99 Galaxy Petrosian apparent I-band
magnitude; observer-frame (25)
1259-1265 F7.3 mag rImag ?=-99 Galaxy Petrosian apparent I-band
magnitude; rest-frame (25)
1267-1273 F7.3 mag e_rImag ?=-99 Error on rImag (errImag)
1275-1281 F7.3 mag IMag ?=-99 Absolute galaxy Petrosian I-band
magnitude
1283-1289 F7.3 mag BmagK ?=-99 Galaxy Kron apparent B-band magnitude;
rest-frame (BmagKron) (26)
1291-1297 F7.3 mag e_BmagK ?=-99 Error on BmagK (erBmagKron)
1299-1305 F7.3 mag ImagK ?=-99 Galaxy Kron apparent I-band magnitude;
rest-frame (ImagKron) (26)
1307-1313 F7.3 mag e_ImagK ?=-99 Error on ImagK (erImagKron)
1315-1321 F7.3 mag B-I ?=-99 Galaxy Petrosian rest-frame (B-I)
color index
1323-1329 F7.3 mag bjmag ?=-99 Galaxy 2dFGRS BJ Vega
magnitude (27)
1331-1337 F7.3 mag rFmag ?=-99 Galaxy 2dFGRS/SCOS rF Vega
magnitude (27)
1339-1345 F7.3 mag FUVmag ?=-99 Galaxy apparent FUV magnitude;
rest-frame (25)(28)
1347-1353 F7.3 mag e_FUVmag ?=-99 Error on FUVmag (erFUVmag)
1355-1361 F7.3 mag NUVmag ?=-99 Galaxy apparent NUV magnitude;
rest-frame (25)(28)
1363-1369 F7.3 mag e_NUVmag ?=-99 Error on NUVmag (erNUVmag)
1371-1377 F7.3 mag NUV-I ?=-99 NUV-I color; rest-frame
1379-1385 F7.3 mag NUV-B ?=-99 NUV-B color; rest-frame
1387-1393 F7.3 mag FUV-NUV ?=-99 FUV-NUV color; rest-frame
1395-1401 F7.3 mag umag ?=-99 Galaxy apparent SDSS u magnitude;
rest-frame (25)(28)
1403-1409 F7.3 mag e_umag ?=-99 Error on umag (erumag)
1411-1417 F7.3 mag gmag ?=-99 Galaxy apparent SDSS g magnitude;
rest-frame (25)(28)
1419-1425 F7.3 mag e_gmag ?=-99 Error on gmag (ergmag)
1427-1433 F7.3 mag rmag ?=-99 Galaxy apparent SDSS r-magnitude;
rest-frame (25)(28)
1435-1441 F7.3 mag e_rmag ?=-99 Error on rmag (errmag)
1443-1449 F7.3 mag imag ?=-99 Galaxy apparent SDSS i-magnitude;
rest-frame (25)(28)
1451-1457 F7.3 mag e_imag ?=-99 Error on imag (erimag)
1459-1465 F7.3 mag zmag ?=-99 Galaxy apparent SDSS z-magnitude;
rest-frame (25)(28)
1467-1473 F7.3 mag e_zmag ?=-99 Error on zmag (erzmag)
1475-1481 F7.3 mag Jmag ?=-99 Galaxy apparent 2MASS J-magnitude;
rest-frame (25)(28)
1483-1489 F7.3 mag e_Jmag ?=-99 Error on Jmag (erJmag)
1491-1497 F7.3 mag Hmag ?=-99 Galaxy apparent 2MASS H-magnitude;
rest-frame (25)(28)
1499-1505 F7.3 mag e_Hmag ?=-99 Error on Hmag (erHmag)
1507-1513 F7.3 mag Kmag ?=-99 Galaxy apparent 2MASS K-magnitude;
rest-frame (25)(28)
1515-1521 F7.3 mag e_Kmag ?=-99 Error on Kmag (erKmag)
1523-1529 F7.3 mag BmagS ?=-99 Total galaxy B-band magnitude from
GIM2D single Sersic fit; rest-frame
(BmagSer)
1531-1537 F7.3 mag e_BmagS ?=-99 GIM2D formal 99% confidence lower
error on BmagSer (erBmagSer)
1539-1545 F7.3 mag E_BmagS ?=-99 GIM2D formal 99% confidence upper
error on BmagSer (ErBmagSer)
1547-1553 F7.3 mag ImagS ?=-99 Total galaxy I-band magnitude
from GIM2D single Sersic fit; rest-frame
(ImagSer)
1555-1561 F7.3 mag e_ImagS ?=-99 GIM2D formal 99% confidence lower
error on ImagSer (erImagSer)
1563-1569 F7.3 mag E_ImagS ?=-99 GIM2D formal 99% confidence upper
error on ImagSer (ErImagSer)
1571-1577 F7.3 mag BmagSc ?=-99 Corrected total galaxy B-band magnitude
from single Sersic fit; rest-frame
(BmagSercorr)
1579-1585 F7.3 mag ImagSc ?=-99 Corrected total galaxy I-band magnitude
from single Sersic fit; rest-frame
(ImagSercorr)
1587-1593 F7.3 mag BmagE ?=-99 Total galaxy B-band magnitude from
GIM2D pure exponential fit; rest-frame
(BmagExp)
1595-1601 F7.3 mag e_BmagE ?=-99 GIM2D formal 99% confidence lower error
on BmagE (erBmagExp)
1603-1609 F7.3 mag E_BmagE ?=-99 GIM2D formal 99% confidence upper error
on BmagE (ErBmagExp)
1611-1617 F7.3 mag ImagE ?=-99 Total galaxy I-band magnitude from
GIM2D pure exponential fit; rest-frame
(ImagExp)
1619-1625 F7.3 mag e_ImagE ?=-99 GIM2D formal 99% confidence lower error
on ImagE (erImagExp)
1627-1633 F7.3 mag E_ImagE ?=-99 GIM2D formal 99% confidence upper error
on ImagE (ErImagExp)
1635-1641 F7.3 mag oBmag.b ?=-99 Bulge B-band magnitude from bulge+disk
decomposition; observer-frame (oBmagBulge)
1643-1649 F7.3 mag e_oBmag.b ?=-99 Formal 99% confidence lower error
on oBmag.b (eroBmagBulge) (29)
1651-1657 F7.3 mag E_oBmag.b ?=-99 Formal 99% confidence upper error
on oBmag.b (EroBmagBulge) (29)
1659-1665 F7.3 mag oImag.b ?=-99 Bulge I-band magnitude from bulge+disk
decomposition; observer-frame (oImagBulge)
1667-1673 F7.3 mag e_oImag.b ?=-99 Formal 99% confidence lower error
on oImag.b (eroImagBulge) (29)
1675-1681 F7.3 mag E_oImag.b ?=-99 Formal 99% confidence upper error
on oImag.b (EroImagBulge) (29)
1683-1689 F7.3 mag rBmag.b ?=-99 Bulge B-band magnitude from bulge+disk
decomposition; rest-frame
(rBmagBulge) (30)
1691-1697 F7.3 mag rImag.b ?=-99 Bulge I-band magnitude from bulge+disk
decomposition; rest-frame
(rImagBulge) (30)
1699-1705 F7.3 mag oBmag.d ?=-99 Disk B-band magnitude from bulge+disk
decomposition; observer-frame (oBmagDisk)
1707-1713 F7.3 mag e_oBmag.d ?=-99 Formal 99% confidence lower error
on oBmag.d (eroBmagDisk) (29)
1715-1721 F7.3 mag E_oBmag.d ?=-99 Formal 99% confidence upper error
on oBmag.d (EroBmagDisk) (29)
1723-1729 F7.3 mag oImag.d ?=-99 Disk I-band magnitude from bulge+disk
decomposition; observer-frame (oImagDisk)
1731-1737 F7.3 mag e_oImag.d ?=-99 Formal 99% confidence lower error
on oImag.d (eroBmagIulge) (29)
1739-1745 F7.3 mag E_oImag.d ?=-99 Formal 99% confidence upper error
on oImag.d (EroBmagIulge) (29)
1747-1753 F7.3 mag rBmag.d ?=-99 Disk B-band magnitude from bulge+disk
decomposition; rest-frame (rBmagDisk) (30)
1755-1761 F7.3 mag rImag.d ?=-99 Disk I-band magnitude from bulge+disk
decomposition; rest-frame (rImagDisk) (30)
1763-1773 E11.4 Msun Mb ?=-99 Bulge stellar mass (BulgeMass) (31)
1775-1785 E11.4 Msun Mb16 ?=-99 The 16th percentile bulge mass
(BulgeMassP16) (31)
1787-1797 E11.4 Msun Mb84 ?=-99 The 84th percentile bulge mass
(BulgeMassP84) (31)
1799-1809 E11.4 Msun Md ?=-99 Disk stellar mass (DiskMass) (31)
1811-1821 E11.4 Msun Md16 ?=-99 The 16th percentile disk mass
(DiskMassP16) (31)
1823-1833 E11.4 Msun Md84 ?=-99 The 84th percentile disk mass
(DiskMassP84) (31)
1835-1841 F7.3 mag d(B-I)V ?=-99 The (B-I) color gradient from Voronoi
tessellated color maps (d(B-I)/dlogrVor)
1843-1849 F7.3 mag e_d(B-I)V ?=-99 Error on d(B-I)V (erd(B-I)/dlogrVor)
1851-1857 F7.3 mag d(B-I)Vc ?=-99 Corrected (B-I) color gradient from
Voronoi tessellated color maps
(corr_d(B-I)/dlogrVor) (32)
1859-1865 F7.3 mag (B-I)RV ?=-99 The (B-I) color at effective radius
from Voronoi tessellated color maps;
rest-frame ((B-I)ReVor)
1867-1873 F7.3 mag e_(B-I)RV ?=-99 Error on (B-I)ReV (er(B-I)ReVor) (33)
1875-1881 F7.3 mag (B-I)RVc ?=-99 Corrected (B-I) color at effective
radius from Voronoi tessellated color maps;
rest-frame (corr(B-I)ReVor) (32)
1883-1889 F7.3 mag (B-I)rms ?=-99 Dispersion around best fit color
profile from Voronoi tessellated
color maps
1891-1897 F7.3 mag d(B-I)G ?=-99 The (B-I) color gradient from GIM2D
best fits (d(B-I)/dlogrGim)
1899-1905 F7.3 mag e_d(B-I)G ?=-99 Error on d(B-I)Gim (erd(B-I)/dlogrGim)
1907-1913 F7.3 mag (B-I)RG ?=-99 The (B-I) color at effective radius
from GIM2D best fits; rest-frame
((B-I)ReGim)
1915-1921 F7.3 mag e_(B-I)RG ?=-99 Error on (B-I)ReG (er(B-I)ReGim) (34)
1923-1933 E11.4 Msun gBadSFR ?=-99 Flag for ZEBRA+ template limited
to a star-forming model (FlagBadSFR) (35)
1935-1937 I3 --- cFlag [0/3]?=-99 Contamination flag (36)
1939-1945 F7.3 mag BmagKc ?=-99 Corrected galaxy Kron B-band magnitude;
rest-frame (BmagKroncorr) (18)
1947-1953 F7.3 mag ImagKc ?=-99 Corrected galaxy Kron I-band magnitude;
rest-frame (ImagKroncorr) (18)
1955-1959 F5.3 --- zCompl [0.6/1] 2dFGRS redshift completeness at
galaxy position (37)
1961-1966 F6.3 mag dFmagLim [18.8/19.7] Extinction corrected magnitude
limit of 2dFGRS at galaxy position (37)
1968-1973 F6.3 --- muVal [20.2/26.1] 2dFGRS completeness mu factor at
galaxy position (37)
1975 I1 --- fPc [0/1] Original 2PIGG central galaxy
flag (PIGGCen) (38)
1977-1983 F7.3 deg diE-I [0/90]?=-99 I-band disk inclination from pure
exponential fit (diskInc-tot-I)
1985-1991 F7.3 deg e_diE-I [0/45]?=-99 Formal 99% confidence lower error
on diE-I (erdiskInc-tot-I)
1993-1999 F7.3 deg E_diE-I [0/45]?=-99 Formal 99% confidence upper error
on diE-I (ErdiskInc-tot-I)
2001-2007 F7.3 deg diE-B [0/90]?=-99 B-band disk inclination from pure
exponential fit (diskInc-tot-B)
2009-2015 F7.3 deg e_diE-B [0/45]?=-99 Formal 99% confidence lower error
on diE-B (erdiskInc-tot-B)
2017-2023 F7.3 deg E_diE-B [0/45]?=-99 Formal 99% confidence upper error
on diE-B (ErdiskInc-tot-B)
2025-2027 I3 --- fDev [0/1]?=-99 Flag indicating deviation between
GIM2D and GALFIT parameters (GalfitDev) (39)
2029-2033 F5.1 --- SpCl [-3/3]?=-99 Flag indicating type of galaxy
spectrum (SpecClass) (40)
--------------------------------------------------------------------------------
Note (1): Projected sizes are converted into physical units assuming the
following cosmological parameters: h=0.7, Ωm=0.3,
ΩΛ=0.7. Parameters which are not available are listed as:
-99 entries for definite positive parameters, and +99 for definite negative
parameters. For merging galaxy pairs we list parameters for both the primary
and secondary galaxy, when available.
Unless specified differently, all magnitudes and colors are in the
AB system. For galaxies outside the WFI FOV all galactic parameters,
except the stellar masses, are given as -99 entries.
Note (2): Galaxy weight accounting for 2dFGRS redshift incompleteness
calculated as described in Section A.
Note (3): R200 radius derived from the group mass (see text).
Note (4): Defined as log(1+δLSS) where δLSS is calculated to
the fifth nearest 2PIGG group (see text).
Note (5): Flag as follows:
1 = group located in first quartile of the distribution of
log(1+δLSS);
2 = second quartile;
3 = third quartile;
4 = fourth quartile.
Note (6): Flag as follows:
0 = relaxed, nominal best-fit most massive galaxy is identified as
"central" (and group center);
1 = relaxed, a central galaxy satisfying criteria described of Section 3.2.1
is identified, but it is not the nominal best-fit most massive galaxy
2 = unrelaxed, no galaxy in the group satisfies the criteria in
Section 3.2.1 to be a central, but nevertheless
the nominal best-fit most massive galaxy is labeled as "central" and
used as the group center.
Note (7): Flag as follows:
0 = satellite;
1 = central;
2 = central if considering only galaxies with WFI B- and I-band imaging.
Note (8): For galaxies outside the WFI FOV the masses are inferred from the
mass vs rF magnitude relation as described in the text.
Note (9): Lower and upper limits corresponding to an increase of 50% of the
best-fit χ2, derived from the distribution of χ2 for
all templates used in the ZEBRA+ SED fitting.
Note (10): Type as follows:
0 = Elliptical;
1 = S0;
2 = Bulge-dominated spiral;
3 = Intermediate disk;
4 = late-type disk;
5 = Irregular.
Note (11): Close pairs are identified as those galaxies which have a velocity
difference, with respect to another group member, Dv<500km/s, and lie at
a projected distance from the same member, dmax≤48arcsec (equal to the
maximum separation between merging galaxies type=1 or type=2. This is
about 50kpc at the typical ZENS redshift).
0 = not merging;
1 = plausible merger, no spectroscopic or photo-z confirmation;
1.5 = same as flag 1 but visible tidal tails;
2 = merger, spectroscopic or photo-z confirmation;
3 = close pair among group members;
4 = disturbed morphology.
Note (12): The parameter is corrected for observational biases as described
in Paper II (Cibinel et al. 2013ApJ...776...72C 2013ApJ...776...72C).
Note (13): Together with the formal GIM2D errors we also provide an additional
error which is obtained by the half difference between the single and double
component half-light radii.
Note (14): Disk scale length from pure exponential GIM2D fit for the entire
galaxy. This scale length is only available for late-type disks (Mtype=4).
Note (15): GIM2D failed to provide some decompositions, which were successfully
re-computed using GALFIT.
* For I-band: 0=GIM2D, 1=GALFIT.
* For B-band:
0 = GIM2D unconstrained.
1 = GALFIT.
2 = average of GIM2D unconstrained and GIM2D with
ellipticity/PA fixed to I-band.
3 = GIM2D with ellipticity/PA fixed to I-band.
4 = GIM2D with ellipticity/PA/bulge parameters fixed to I-band.
5 = GIM2D with ellipticity/PA/bulge/disk parameters fixed to I-band.
Note (16): Special values:
* -99 if no reliable decomposition is available.
* -98 if galaxy has a late-type morphology and is best described by
single component Sersic fit with n<1.5.
* No bulge+disk decomposition is performed on galaxies classified as
ellipticals, however we set B/T=1 in this catalogue for this
morphological type.
Note (17): Obtained by integration to infinity of the bulge+disk surface
brightness profiles.
Note (18): Non parametric structural index corrected for PSF and observational
biases as described in Paper II.
Note (19): This is the actual Petrosian radius, not the default SEXTRACTOR
Petrosian aperture which is 2.5 the Petrosian radius.
Note (20): Default SEXTRACTOR Kron aperture equal to 2.5 times Rkron.
Note (21):
0 = not barred;
1 = barred.
Note (22): Flag as follows:
0 = quenched;
1 = moderately star-forming;
2 = strongly star-forming.
Note (23): Flag as follows:
0 = the galaxy satisfies color-color and spectral criteria.
1 = the galaxy has an actively star-forming spectrum but has red
optical-UV colors.
2 = the galaxy has a quenched spectrum but has blue optical-UV colors
and strong Hdelta absorption.
3 = the galaxy has a quenched spectrum, has blue optical-UV colors but
no strong Hdelta absorption (see Paper III (Cibinel et al.
2013ApJ...777..116C 2013ApJ...777..116C) for details).
Note (24): The SSFR for galaxies for which the best fit SED result in a
SFR<10-4Msun/yr is set equal to sSFR=10-14yr-1.
Likewise SFR<10-4Msun/yr are set to SFR=10-4Msun/yr.
Note (25): Magnitude computed in an elliptical aperture equal to 2 times the
the largest Petrosian radius among the B- and I-band one.
This data is used in the derivation of stellar masses.
Note (26): Sextractor MAG_AUTO
Note (27): These are the original bj and rF magnitudes, as released by
the 2dFGRS team. The bj magnitude is corrected for galactic extinction,
but is not at the rest-frame. The rF in not corrected for galactic
extinction and is not at the rest-frame. Both are in the Vega system.
Note (28): 999 = undetected;
Note (29): Sum in quadrature of the magnitude errors deriving from the formal
GIM2D uncertainty on the flux and on the bulge-to-total ratio.
Bulge lower magnitude errors are set to 99 if erBT=0.
Disk upper magnitude errors are set to 99 if ErBT=1.
Note (30): For the bulge and disk components the k-corrections are obtained
from the observed colors and the relation between the k-correction
and color as derived for the entire galaxies (see Paper III;
Cibinel et al. 2013ApJ...777..116C 2013ApJ...777..116C).
Note (31): -99 if no reliable B+D decompositions are available in both B-
and I-band or color cannot be reproduced by synthetic spectral library.
Note (32): Color gradients and color at the half-light radius corrected for
observational biases as described in Paper III (Cibinel et al.
2013ApJ...777..116C 2013ApJ...777..116C).
Note (33): This error reflects the S/N ratio obtained in the Voronoi bins at
the galaxy half-light radius. It is set to 99 if tessellated map does not
reach the half-light radius.
Note (34): Quadratic sum of the B-,I- surface brightness errors on a single
pixel at the galaxy half-light radius. It is set to 99 if surface
brightness in one of the two bands is below rms value of the sky.
Note (35): For a few galaxies classified as moderately or strongly star-forming
from their spectral features or location on the NUV-optical color-color
diagram the unconstrained ZEBRA+ fits give inconsistently low SFR and
sSFR values. For these galaxies ZEBRA+ was re-run imposing a star-forming
template model. The flag in this column identifies such galaxies and is
set equal to the incorrect galaxy stellar mass from the unconstrained
ZEBRA+ fits for the re-fitted galaxies and to -99 for all other galaxies
(see Paper III (Cibinel et al. 2013ApJ...777..116C 2013ApJ...777..116C) for details).
Note (36):
0 = no bright star/companion within Petrosian radius.
1 = galaxy lies close to a bright star, the parameters for this galaxy may
be subject to large uncertainties.
2 = companion within the galaxy Petrosian radius.
3 = bright clump/star-clusters within Petrosian radius.
Note (37): These parameters are used to calculate the magnitude and position
dependent 2dFGRS redshift completeness at the ZENS galaxy positions.
See Section 8 of Colless et al. 2001, VII/250 and Appendix A.
Note (38): This flag is equal to 1 if the given galaxy corresponds to the
original 2PIGG group center, and otherwise equal to 0. For merging
pairs/triplets, which have a single entry in the 2PIGG catalog, the
flag is set equal for all merger members.
Note (39):
0 = GIM2D and GALFIT I-band parameters agree within a factor of two;
1 = At least one parameter differs more than a factor of two between the
GIM2D and GALFIT I-band fits
-99 = if either the GALFIT or GIM2D decomposition is not reliable/available
(see Paper II; Cibinel et al. 2013ApJ...776...72C 2013ApJ...776...72C).
Note (40): The spectroscopic flag used, together with the color criteria
described in Paper III (Cibinel et al. 2013ApJ...777..116C 2013ApJ...777..116C), to classify
galaxies in strongly star-forming, moderately star forming and quenched
systems (see also Figure 4 of Paper III). Specifically,
1 = no emission lines (in particular Hα and Hβ);
2 = Hα and [OIII] or [OII] in emission, but no Hbeta;
3 = strong emission in Hα, Hβ, [OII] and [OIII].
The flag is negative (from -1 to -3) if the spectrum is probing only
the galaxy central region (nuclear spectrum).
Note (41): M20 is the second-order moment of the brightest 20% of galaxy
pixels (e.g., Abraham et al. 2003, J/ApJ/588/218; Lotz et al. 2004,
J/AJ/128/163).
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Cibinel et al. Paper II. 2013ApJ...776...72C 2013ApJ...776...72C
Cibinel et al. Paper III. 2013ApJ...777..116C 2013ApJ...777..116C
Pipino et al. Paper V. 2014ApJ...797..127P 2014ApJ...797..127P
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 20-Mar-2015