Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..966...62d&link_type=abstract
RELATIVISTIC ASTROPHYSICS: 4th Italian-Sino Workshop. AIP Conference Proceedings, Volume 966, pp. 62-68 (2008).
Astronomy and Astrophysics
Astrophysics
Galaxy Clusters, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies, Elliptical Galaxies
Scientific paper
Photometric properties of the early type Brightest Cluster Galaxies (BCGs) has been investigated for a sample of 85 BCGs with redshifts less than 0.1 selected from the C4 cluster catalogue. The results are compared to those obtained from a sample of elliptical galaxies chosen with similar apparent magnitude and redshift ranges. We find that BCGs have steeper size-luminosity (R~Lα) and Faber-Jackson (L~σβ) relations than the bulk of early type galaxies. The differences in the scaling relations suggest that the dynamical structure and formation route of BCGs may be different from the bulk of early type galaxies, in particular dry (dissipationless) mergers may play a more important role in their formation.
Deng Zu-Gang
Liu Feng-Shan
Mao Shijun
Xia Xiao-Yang
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