J/A+A/381/420 Group of Galaxies in the SSRS2 catalog (Adami+, 2002)
Group analysis in the SSRS2 catalog.
Adami C., Mazure A.
<Astron. Astrophys. 381, 420 (2002)>
=2002A&A...381..420A 2002A&A...381..420A
ADC_Keywords: Galaxy catalogs ; Redshifts
Keywords: galaxies: clusters: general -
cosmology: large-scale structure of Universe
Abstract:
We present an automated method to detect populations of groups in
galaxy redshift catalogs. This method uses both analysis of the
redshift distribution along lines of sight in fixed cells to detect
elementary structures and a friend-of-friend algorithm to merge these
elementary structures into physical structures. We apply this method
to the SSRS2 galaxy redshift catalog (Southern Sky Redshift Survey, Da
Costa et al., Cat. J/AJ/116/1). The groups detected with our method
are similar to group catalogs detected with pure friend-of-friend
algorithms.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 88 80 Group sample (tables 1 and 2 of the publication)
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See also:
J/AJ/116/1 : Southern Sky Redshift Survey (Da Costa+, 1998)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ngal Number of galaxies inside groups
4- 11 F8.4 deg RAdeg Right ascension (J2000) (1)
13- 20 F8.4 deg DEdeg Declination (J2000) (1)
22- 27 F6.4 --- z Mean redshift
29- 36 E8.3 solLum ObsLum Observed group luminosity
(luminosity before corrections)
38- 44 F7.5 mag E(B-V) Extinction at the group coordinates from
Schlegel et al. (1998ApJ...500..525S 1998ApJ...500..525S)
46- 49 F4.2 --- E(B-V)cf Extinction correction factor
51- 54 F4.2 --- Comp Completeness correction factor
56- 63 E8.3 solLum TotLum Group total luminosity
65- 72 E8.3 solMass Mass Virial mass
74- 79 F6.1 --- M/L Mass to light ratio in the SSRS2 magnitude
passband
81- 83 I3 km/s sigma Velocity dispersion
85- 88 F4.2 Mpc Rvir Virial radius in h-1Mpc
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Note (1): Objects identified as [AM2002] DDD.dddd+DD.dddd in Simbad
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 13-May-2002