Brightest Cluster Galaxy Formation: Models vs Observations

Details Brightest Cluster Galaxy Formation: Models vs Observations Brightest Cluster Galaxy Formation: Models vs Observations

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924630m&link_type=abstract

American Astronomical Society, AAS Meeting #219, #246.30

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a study on the formation of the brightest/most massive galaxies in clusters in which we compare predictions by the GalICS semi-analytic model for galaxy formation to observations using the Szabo et al. (2011) SDSS cluster catalogue. The goals of the project are many, for instance to assess the validity of the common assumption that the most massive galaxy is central to its own cluster. In addition, we aim at assessing if the mass (luminosity) difference between the first and the second ranked galaxy correlates with either the status of the clusters (relaxed versus on-going merger) or the age. Preliminary results will be presented.

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