J/A+A/566/A1 Flux- and volume-limited groups for SDSS galaxies (Tempel+, 2014)
Flux- and volume-limited groups/clusters for the SDSS galaxies:
catalogues and mass estimation.
Tempel E., Tamm A., Gramann M., Tuvikene T., Liivamagi L. J., Suhhonenko I.,
Kipper R., Einasto M., Saar E.
<Astron. Astrophys. 566, A1 (2014)>
=2014A&A...566A...1T 2014A&A...566A...1T
ADC_Keywords: Clusters, galaxy ; Galaxy catalogs
Keywords: galaxies: clusters: general - galaxies: groups: general -
galaxies: statistics - large-scale structure of Universe -
cosmology: observations - catalogs
Abstract:
We provide flux-limited and volume-limited galaxy group and cluster
catalogues, based on the spectroscopic sample of the SDSS data release
10 galaxies. We used a modified friends-of-friends (FoF) method with a
variable linking length in the transverse and radial directions to
identify as many realistic groups as possible. The flux-limited
catalogue incorporates galaxies down to mr=17.77mag. It includes
588193 galaxies and 82458 groups. The volume-limited catalogues are
complete for absolute magnitudes down to Mr= -18.0, -18.5, -19.0,
-19.5, -20.0, -20.5, and -21.0; the completeness is achieved within
different spatial volumes, respectively. Our analysis shows that
flux-limited and volume-limited group samples are well compatible to
each other, especially for the larger groups/clusters. Dynamical mass
estimates, based on radial velocity dispersions and group extent in
the sky, are added to the extracted groups. The catalogues can also be
accessed via http://cosmodb.to.ee.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
galaxies.dat 676 588193 Table of galaxies (mr≤17.77, z≤0.2)
groups.dat 217 82458 Flux limited groups
v180_gr.dat 181 7328 Volume limited groups (Mrlim=-18.0)
v180_gal.dat 144 49860 Volume limited galaxies (Mrlim=-18.0, zlim=0.045)
v185_gr.dat 181 10929 Volume limited groups (Mrlim=-18.5 mag)
v185_gal.dat 144 73006 Volume limited galaxies (Mrlim=-18.5, zlim=0.057)
v190_gr.dat 181 15715 Volume limited groups (Mrlim=-19.0 mag)
v190_gal.dat 144 105041 Volume limited galaxies (Mrlim=-19.0, zlim=0.071)
v195_gr.dat 181 22524 Volume limited groups (Mrlim=-19.5 mag)
v195_gal.dat 144 149773 Volume limited galaxies (Mrlim=-19.5, zlim=0.089)
v200_gr.dat 181 24258 Volume limited groups (Mrlim=-20.0 mag)
v200_gal.dat 144 163094 Volume limited galaxies (Mrlim=-20.0, zlim=0.110)
v205_gr.dat 181 23007 Volume limited groups (Mrlim=-20.5 mag)
v205_gal.dat 144 164004 Volume limited galaxies (Mrlim=-20.5, zlim=0.136)
v210_gr.dat 181 14155 Volume limited groups (Mrlim=-21.0 mag)
v210_gal.dat 144 125016 Volume limited galaxies (Mrlim=-21.0, zlim=0.168)
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See also:
J/A+A/540/A106 : SDSS-DR8 groups and clusters of galaxies (Tempel+ 2012)
J/A+A/514/A102 : SDSS DR7 groups of galaxies (Tago+, 2010)
Byte-by-byte Description of file: galaxies.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- GalID [1/588193] Unique galaxy identification
8- 26 I19 --- specID ?=0 SDSS DR10 spectroscopic objectID
28- 46 I19 --- objID SDSS DR10 photometric objectID
49- 53 I5 --- GroupID [1/82458]?=0 Group/cluster id
57- 59 I3 --- Ngal [1/849] Richness of group galaxy belongs
63- 65 I3 --- Rank [1/849] Luminosity rank within its group
67- 76 F10.6 Mpc Dist.g Comoving distance to group centre (G1)
78- 89 F12.9 --- zobs [-0.01/0.21] Observed redshift
91-102 F12.9 --- zcmb [0/0.2] Redshift (CMB rest frame)
104-115 F12.9 --- e_z Uncertainty of the redshift
117-126 F10.6 Mpc Dist Comoving distance (G1)
128-137 F10.6 Mpc Distcor Comoving distance, after suppressing the
"finger-of-god" effect (G1)
139-152 F14.9 deg RAdeg Right ascension (J2000)
154-167 F14.9 deg DEdeg Declination (J2000)
169-182 F14.9 deg GLON Galactic longitude
184-197 F14.9 deg GLAT Galactic latitude
199-212 F14.9 deg SGLON Supergalactic longitude
214-227 F14.9 deg SGLAT Supergalactic latitude
229-242 F14.9 deg lambda SDSS survey coordinate, λ
244-257 F14.9 deg eta SDSS survey coordinate, η
259-269 F11.6 Mpc Xpos Cartesian x coordinate (G1)
271-281 F11.6 Mpc Ypos Cartesian y coordinate (G1)
283-293 F11.6 Mpc Zpos Cartesian z coordinate (G1)
295-305 F11.6 mag umag Extinction corrected Petrosian u magnitude
307-317 F11.6 mag gmag Extinction corrected Petrosian g magnitude
319-329 F11.6 mag rmag Extinction corrected Petrosian r magnitude
331-341 F11.6 mag imag Extinction corrected Petrosian i magnitude
343-353 F11.6 mag zmag Extinction corrected Petrosian z magnitude
355-365 F11.6 mag uMAG Absolute magnitude u-band, k+e-corrected (G1)
367-377 F11.6 mag gMAG Absolute magnitude g-band, k+e-corrected (G1)
379-389 F11.6 mag rMAG Absolute magnitude r-band, k+e-corrected (G1)
391-401 F11.6 mag iMAG Absolute magnitude i-band, k+e-corrected (G1)
403-413 F11.6 mag zMAG Absolute magnitude z-band, k+e-corrected (G1)
415-425 F11.6 mag k+e.u k+e-correction (u filter)
427-437 F11.6 mag k+e.g k+e-correction (g filter)
439-449 F11.6 mag k+e.r k+e-correction (r filter)
451-461 F11.6 mag k+e.i k+e-correction (i filter)
463-473 F11.6 mag k+e.z k+e-correction (z filter)
475-485 F11.6 mag ext.u Galactic extinction (u filter)
487-497 F11.6 mag ext.g Galactic extinction (g filter)
499-509 F11.6 mag ext.r Galactic extinction (r filter)
511-521 F11.6 mag ext.i Galactic extinction (i filter)
523-533 F11.6 mag ext.z Galactic extinction (z filter)
536-546 E11.6 10+10Lsun Lr Observed luminosity in the r-band (G1)
548-556 F9.6 --- w [1/9] Weight factor for the galaxy (1)
559 I1 --- r_z [0/3] Source of redshift (2)
562 I1 --- u_Lr [0/1] 1=luminosity is uncertain
567 I1 --- M [0/2] morphology of the galaxy (3)
573 I1 --- Mz [0/2] morphology from galaxy zoo
(Lintott et al. 2008MNRAS.389.1179L 2008MNRAS.389.1179L) (3)
574-582 F9.5 --- pE [0/1] Probability of early-type (4)
583-591 F9.5 --- pS0 [0/1] Probability of S0 galaxy
592-600 F9.5 --- pSa [0/1] Probability of Sab galaxy
601-609 F9.5 --- pSc [0/1] Probability of Scd galaxy
610-620 F11.6 Mpc Dist.e Distance from survey mask border (G1)
622-634 F13.8 --- Den1 Environmental density at scale=1Mpc/h (G2)
636-648 F13.8 --- Den2 Environmental density at scale=2Mpc/h (G2)
650-662 F13.8 --- Den4 Environmental density at scale=4Mpc/h (G2)
664-676 F13.8 --- Den8 Environmental density at scale=5Mpc/h (G2)
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Note (1): times Lr was used to calculate the luminosity density field
Note (2): Source of redshift as follows:
0 = SDSS
1 = 2MRS
2 = 2dFGRS
3 = RC3
Note (3): Morphology of the galaxy is:
0 = unclear
1 = spiral
2 = elliptical
Note (4): Data is taken from Huertas-Company et al. 2011A&A...525A.157H 2011A&A...525A.157H
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Byte-by-byte Description of file: groups.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- GroupID [1/82458] Group/cluster ID
10- 12 I3 --- Ngal [2/849] Richness
14- 27 F14.9 deg RAdeg Right ascension of group centre (J2000)
29- 42 F14.9 deg DEdeg Declination of group centre (J2000)
44- 54 F11.8 --- zcmb CMB-corrected redshift of group
56- 65 F10.6 Mpc Dist.c Comoving distance to group center (G1)
67- 78 F12.6 km/s sig.v rms radial velocity deviation σV
80- 89 F10.6 Mpc sig.sky rms deviation of the projected distance in
the sky from group center σsky (G1)
91-100 F10.6 Mpc Rvir Virial radius (projected harmonic mean) (G1)
102-111 F10.6 Mpc Rmax Maximum radius of the group (G1)
113-124 E12.5 10+12Msun MNFW Mass (NFW profile) (G1)
126-137 E12.5 10+12Msun MHer Mass (Hernquist profile) (G1)
139-150 E12.5 10+10Lsun Lrgroup Observed luminosity (G1)
152-161 F10.6 --- w [1/9] Weight factor for the group (2)
163-175 F13.8 --- Den1 Environment density: 1Mpc/h (G2)
177-189 F13.8 --- Den2 Environment density: 2Mpc/h (G2)
191-203 F13.8 --- Den4 Environment density: 4Mpc/h (G2)
205-217 F13.8 --- Den8 Environment density: 8Mpc/h (G2)
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Note (2): at the mean distance of the group
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Byte-by-byte Description of file: v*_gal.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- GalID [1/588193] Our identification number
8- 12 I5 --- GroupID Group/cluster ID
16- 18 I3 --- Ngal Richness
22- 24 I3 --- Rank Luminosity rank
26- 36 F11.6 mag uMAG Absolute magnitude u-band, k+e corrected (G1)
38- 48 F11.6 mag gMAG Absolute magnitude g-band, k+e corrected (G1)
50- 60 F11.6 mag rMAG Absolute magnitude r-band, k+e corrected (G1)
62- 72 F11.6 mag iMAG Absolute magnitude i-band, k+e corrected (G1)
74- 84 F11.6 mag zMAG Absolute magnitude z-band, k+e corrected (G1)
86- 97 E12.5 10+10Lsun Lr Observed luminosity in the r-band (G1)
99-108 F10.6 Mpc Distcor Comoving distance after suppressing the
"finger-of-god" effect (G1)
110-120 F11.6 Mpc Xpos Cartesian x coordinate (G1)
122-132 F11.6 Mpc Ypos Cartesian y coordinate (G1)
134-144 F11.6 Mpc Zpos Cartesian z coordinate (G1)
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Byte-by-byte Description of file: v*_gr.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- GroupID Group/cluster ID
8- 12 I5 --- Ngal Richness
14- 24 F11.6 deg RAdeg Right ascension of group (J2000)
26- 36 F11.6 deg DEdeg Declination of group (J2000)
38- 47 F10.7 --- zcmb CMB-corrected redshift
49- 57 F9.5 Mpc Dist.c Comoving distance to group (G1)
59- 68 F10.4 km/s sig.v rms radial velocity deviation σV
70- 78 F9.5 Mpc sig.sky rms deviation of the projected distance in
the sky from group center σsky (G1)
80- 88 F9.5 Mpc Rvir Virial radius (G1)
90- 98 F9.5 Mpc Rmax Maximum radius of group (G1)
100-111 E12.5 10+12Msun MNFW Mass (NFW profile) (G1)
113-124 E12.5 10+12Msun MHer Mass (Hernquist profile) (G1)
126-137 E12.5 10+10Lsun Lrgroup Observed luminosity (G1)
139-148 F10.5 --- Den1 Environment density: 1Mpc/h (G2)
150-159 F10.5 --- Den2 Environment density: 1Mpc/h (G2)
161-170 F10.5 --- Den4 Environment density: 1Mpc/h (G2)
172-181 F10.5 --- Den8 Environment density: 1Mpc/h (G2)
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Global Notes:
Note (G1): the cosmology assumes H0=100km/s/Mpc, Ωm=0.27 and
ΩΛ=0.73. Distances are Mpc/h, masses in M☉/h,
luminosities in L☉/h2, and absolute magnitudes in mag+5logh.
Note (G2): Normalised environmental density of the galaxy for the
smoothing scale of a=1,2,4,8 Mpc/h
Acknowledgements:
Elmo Tempel, elmo(at)to.ee
(End) R. Kipper, E. Tempel [TO], Patricia Vannier [CDS] 24-Apr-2014