J/MNRAS/416/727 Padova-Millennium Galaxy and Group Catalogue (Calvi+, 2011)
The Padova-Millennium Galaxy and Group Catalogue (PM2GC): the group-finding
method and the PM2GC catalogues of group, binary and single field galaxies.
Calvi R., Poggianti B.M., Vulcani B.
<Mon. Not. R. Astron. Soc., 416, 727-738 (2011)>
=2011MNRAS.416..727C 2011MNRAS.416..727C
ADC_Keywords: Galaxy catalogs; Galaxies, photometry; Redshifts
Keywords: galaxies: evolution - galaxies: formation -
galaxies: groups: general - galaxies: stellar content
Abstract:
We present the construction and describe the properties of the
Padova-Millennium Galaxy and Group Catalogue (PM2GC), a galaxy
catalogue representative of the general field population in the local
Universe. We characterize galaxy environments by identifying galaxy
groups at 0.04≤z≤0.1 with a Friends-of-Friends (FoF) algorithm using
a complete sample of 3210 galaxies brighter than MB=-18.7 taken from
the Millennium Galaxy Catalogue (MGC, Liske et al., 2003, Cat.
VII/240), a 38deg2 image photometric and spectroscopic equatorial
survey. We identified 176 groups with at least three members,
comprising in total 1057 galaxies and representing ∼43 per cent of the
general field population in that redshift range.
Description:
To build a catalogue that satisfies our requirements of spectroscopic
and photometric completeness, we used a set of galaxies derived from
the Millennium Galaxy Catalogue (MGC, Cat. VII/240), a B-band imaging
survey, both deep and wide, which provides a high-quality, complete
representation of the nearby galaxy populations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 65 176 Galaxy groups with their properties
table3.dat 150 1057 Galaxies in groups with their properties
table4.dat 123 1141 Galaxies in binary systems catalogue with their
properties
table5.dat 123 490 Galaxies in single catalogue with their properties
table6.dat 131 3210 Galaxies in general field catalogue with their
properties
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See also:
VII/240 : Millennium Galaxy Catalogue (Liske+, 2003)
J/ApJS/167/1 : Galaxy groups and clusters from SDSS (Berlind+, 2006)
J/A+A/474/783 : Main galaxy groups from SDSS-DR5 (Deng+, 2007)
J/A+A/479/927 : Group of galaxies in SDSS 5 (Tago+, 2008)
J/MNRAS/348/866 : Galaxy groups in the 2dFGRS (Eke+, 2004)
J/MNRAS/395/255 : Compact groups of galaxies in SDSS DR6 (McConnachie+, 2009)
J/A+A/514/A102 : SDSS DR7 groups of galaxies (Tago+, 2010)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [GR]
3- 6 I4 --- PM2GC [1000/1230] PM2GC group serial number (NNNN),
<[CPV2011] GRPM2 NNNN> in Simbad
8- 13 F6.4 --- z Median group redshift
15- 18 I4 km/s sigma Rest-frame velocity dispersion
20- 22 I3 km/s e_sigma rms uncertainty on sigmaPM2
24- 25 I2 --- Ngal Number of galaxies in group
27- 34 F8.4 deg RAdeg Geometric centre right ascension (J2000)
36- 42 F7.4 deg DEdeg Geometric centre declination (J2000)
44- 48 F5.3 Mpc R200 Radius R200
50- 53 I4 --- GR2P ?=9999 Matched 2PIGG group serial number (G1)
55- 58 I4 --- GR2Pg 2PIGG group, or groups, to which galaxies of
our group belong
60- 61 I2 --- N2P Number of galaxies of our group that are
members of the 2PIGG matched group (2)
63 I1 --- f2P 2PIGG match flag (G2)
65 I1 --- edge [1/2] Edge flag (1=no problem) (G3)
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Note (2): 0 indicates no galaxies in 2PIGG or ungrouped galaxies
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 I05 --- MGC Galaxy serial number in MGC
7- 12 F6.4 --- zMGC Galaxy redshift in MGC
14- 21 F8.4 deg RAdeg MGC right ascension (J2000)
23- 29 F7.4 deg DEdeg MGC declination (J2000)
31- 32 A2 --- --- [GR]
33- 36 I4 --- PM2GC [1000/1230] Group number as in table2
38- 43 F6.4 Mpc dMpc Distance from group geometric centre in Mpc
44- 50 F7.4 --- dR200 Distance from group geometric centre in
R200 units
52- 56 F5.2 [Msun] logMPM2 Logarithm of galaxy stellar mass (Kroupa IMF)
obtained from MGC-SDSS colours (PM2GC mass)
58- 62 F5.2 [Msun] logMCAS Logarithm of galaxy stellar mass (Kroupa IMF)
we computed using DR7-CAS colours
64- 68 F5.2 [Msun] logMDR7 ?=99.99 Logarithm of galaxy stellar mass
(Kroupa IMF) given in SDSS-DR7 catalogue
70- 75 F6.3 mag gmagc ?=99.999 DR7 g model magnitude corrected
for extinction
77- 82 F6.3 mag rmagc ?=99.999 DR7 r model magnitude corrected
for extinction
84- 89 F6.3 mag imagc ?=99.999 DR7 i model magnitude corrected
for extinction
91- 96 F6.3 mag umagc ?=99.999 DR7 u model magnitude corrected
for extinction
98-103 F6.3 mag zmagc ?=99.999 DR7 z model magnitude corrected
for extinction
105-110 F6.3 mag B-V Rest-frame B-V colour computed using the
MGC-SDSS g-r colour index
111 A1 --- --- [0]
113-118 F6.3 mag B-Vcas ?=9.999 Rest-frame B-V colour computed using
DR7 g-r colour index
119 A1 --- --- [0]
121-127 F7.3 mag BMAG Absolute magnitude in B band
129-135 F7.3 mag VMAG Absolute magnitude in V band
137-141 I5 --- 2PIGG ?=9999 2PIGG galaxy serial number (G1)
143-146 I4 --- GR2P ?=9999 2PIGG galaxy group, 0 if ungrouped (G1)
148 I1 --- f2P 2PIGG match flag of hosting group (G2)
150 I1 --- edge [1/2] Edge flag (1=no problem) (G3)
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Byte-by-byte Description of file: table[45].dat
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Bytes Format Units Label Explanations
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1- 5 I05 --- MGC Galaxy serial number in MGC
7- 12 F6.4 --- zMGC Galaxy redshift in MGC
14- 21 F8.4 deg RAdeg MGC right ascension (J2000)
23- 29 F7.4 deg DEdeg MGC declination (J2000)
31- 35 F5.2 [Msun] logMPM2 Logarithm of galaxy stellar mass (Kroupa IMF)
obtained from MGC-SDSS colours (PM2GC mass)
37- 41 F5.2 [Msun] logMCAS Logarithm of galaxy stellar mass (Kroupa IMF)
we computed using DR7-CAS colours
43- 47 F5.2 [Msun] logMDR7 ?=99.99 Logarithm of galaxy stellar mass
(Kroupa IMF) given in SDSS-DR7 catalogue
49- 54 F6.3 mag gmagc ?=99.99 DR7 g model magnitude corrected
for extinction
56- 61 F6.3 mag rmagc ?=99.99 DR7 r model magnitude corrected
for extinction
63- 68 F6.3 mag imagc ?=99.99 DR7 i model magnitude corrected
for extinction
70- 75 F6.3 mag umagc ?=99.99 DR7 u model magnitude corrected
for extinction
77- 82 F6.3 mag zmagc ?=99.99 DR7 z model magnitude corrected
for extinction
84- 89 F6.3 mag B-V Rest-frame B-V colour computed using the
MGC-SDSS g-r colour index
91- 96 F6.3 mag B-Vcas ?=9.999 Rest-frame B-V colour computed using
DR7 g-r colour index
98-104 F7.3 mag BMAG Absolute magnitude in B band
106-112 F7.3 mag VMAG Absolute magnitude in V band
114-118 I5 --- 2PIGG ?=9999 2PIGG galaxy serial number (G1)
120-123 I4 --- GR2P ?=9999 2PIGG galaxy group, 0 if ungrouped (G1)
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 5 I05 --- MGC Galaxy serial number in MGC
7- 12 F6.4 --- zMGC Galaxy redshift in MGC
14- 21 F8.4 deg RAdeg MGC right ascension (J2000)
23- 29 F7.4 deg DEdeg MGC declination (J2000)
31- 35 F5.2 [Msun] logMPM2 Logarithm of galaxy stellar mass (Kroupa IMF)
obtained from MGC-SDSS colours (PM2GC mass)
37- 41 F5.2 [Msun] logMCAS Logarithm of galaxy stellar mass (Kroupa IMF)
we computed using DR7-CAS colours
43- 47 F5.2 [Msun] logMDR7 ?=99.99 Logarithm of galaxy stellar mass
(Kroupa IMF) given in SDSS-DR7 catalogue
49- 54 F6.3 mag gmagc ?=99.99 DR7 g model magnitude corrected
for extinction
56- 61 F6.3 mag rmagc ?=99.99 DR7 r model magnitude corrected
for extinction
63- 68 F6.3 mag imagc ?=99.99 DR7 i model magnitude corrected
for extinction
70- 75 F6.3 mag umagc ?=99.99 DR7 u model magnitude corrected
for extinction
77- 82 F6.3 mag zmagc ?=99.99 DR7 z model magnitude corrected
for extinction
84- 89 F6.3 mag B-V Rest-frame B-V colour computed using the
MGC-SDSS g-r colour index
90 A1 --- --- [0]
92- 97 F6.3 mag B-Vcas Rest-frame B-V colour computed using
DR7 g-r colour index
98 A1 --- --- [0]
100-106 F7.3 mag BMAG Absolute magnitude in B band
108-114 F7.3 mag VMAG Absolute magnitude in V band
116-120 I5 --- 2PIGG ?=9999 2PIGG galaxy serial number (G1)
122-125 I4 --- GR2P ?=9999 2PIGG galaxy group, 0 if ungrouped (G1)
128-131 I4 --- Env Flag for environment to which the galaxy
belongs (the group number in PM2GC denotes
group) (4)
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Note (4): Environment flag as follows:
1 = field-single (entry also in table5)
2 = field-binary (entry also in table4)
3 = group at z<0.04 or z>0.1
4 = members of trial group, but not in final group
≥1000 = members of group defined in table2 (entry also in table3)
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Global notes:
Note (G1): 2PIGG = 2dFGRS Percolation-Inferred Galaxy Group catalog,
Eke et al. 2004, Cat. J/MNRAS/348/866); 9999 if no match with 2PIGG
Note (G2): 2PIGG match flag as follows:
1 = a good match with 2PIGG, both in geometric centre and Δz≤0.0007,
one to one group correspondence, all of our galaxies in common with
2PIGG are in the matched 2PIGG group
2 = the same as 1 but at least one of our group galaxies is either ungrouped
for 2PIGG, and/or belongs to a different 2PIGG group, and/or is not
present in 2PIGG
3 = no match with 2PIGG, 2PIGG has none or <50 per cent of our redshifts
4 = no match with 2PIGG, and 2PIGG has at least 50 per cent of our redshifts
5 = one group for 2PIGG, two or more groups for us
6 = no match with 2PIGG, high σ for number of members
0 = the group with likely edge problems by comparison with 2PIGG
Note (G3): 1 = no edge problem, 2 = edge problem. See section 3 of the paper.
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History:
From electronic version of the journal
References:
Eke et al., 2004MNRAS.348..866E 2004MNRAS.348..866E, 2PIGG catalogue
Berlind et al., 2006ApJS..167....1B 2006ApJS..167....1B, SDSS group catalogue, Cat. J/ApJS/167/1
(End) Patricia Vannier [CDS] 20-Mar-2012