J/MNRAS/379/867 BCG C4 cluster catalog (von der Linden+, 2007)
How special are brightest group and cluster galaxies?
von der Linden A., Best P.N., Kauffmann G., White S.D.M.
<Mon. Not. R. Astron. Soc., 379, 867-893 (2007)>
=2007MNRAS.379..867V 2007MNRAS.379..867V
ADC_Keywords: Clusters, galaxy ; Velocity dispersion
Keywords: galaxies: clusters: general -
galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters
Abstract:
We use the Sloan Digital Sky Survey (SDSS) to construct a sample of
625 brightest group and cluster galaxies (BCGs) together with control
samples of non-BCGs matched in stellar mass, redshift and colour. We
investigate how the systematic properties of BCGs depend on stellar
mass and on their privileged location near the cluster centre. The
groups and clusters that we study are drawn from the C4 catalogue of
Miller et al. (2005, Cat. J/AJ/130/968) but we have developed
improved algorithms for identifying the BCG and for measuring the
cluster velocity dispersion. Since the SDSS photometric pipeline tends
to underestimate the luminosities of large galaxies in dense
environments, we have developed a correction for this effect which can
be readily applied to the published catalogue data.
Description:
Our analysis is based on the Data Release 4 (DR4) of SDSS, whose main
galaxy sample provides spectra for more than 500,000 galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 54 625 Our catalogue of brightest cluster galaxies for
the C4 cluster catalogue
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See also:
J/AJ/130/968 : SDSS-C4 cluster catalog (Miller+, 2005)
http://www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID2 ?=- SDSS-C4 number of the brighter cluster galaxy
(BCG), <SDSS-C4 NNNN> in Simbad (Miller et al.
2005, Cat. J/AJ/130/968)
6- 9 I4 --- ID3 SDSS C4_2003 number of the brighter cluster galaxy
(BCG), <SDSS-C4-DR3 NNNN> in Simbad
11- 20 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
22- 31 F10.6 deg DEdeg Declination in decimal degrees (J2000)
33- 37 F5.3 --- z Cluster redshift
39- 42 I4 km/s sigma Velocity dispersion σ
44- 46 I3 km/s E_sigma Error on Sigma (upper value)
48- 50 I3 km/s e_sigma Error on Sigma (lower value)
52- 54 I3 --- Ngal Number of galaxies from which the cluster redshift
and velocity dispersion were determined
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 11-Jul-2009