Velocity Dispersions of Brightest Cluster Galaxies and Their Host Clusters
نویسندگان
چکیده
منابع مشابه
The Luminosities, Sizes and Velocity Dispersions of Brightest Cluster Galaxies: Implications for Formation History
The size-luminosity relation of early-type Brightest Cluster Galaxies (BCGs), Re ∝ L , is steeper than that for the bulk of the early-type galaxy population, for which Re ∝ L . This is true if quantities derived from either deVaucouleur or Sersic fits to the surface brightness profiles are used. Contamination from an intra-cluster light component centered on the BCG, with similar parameters to ...
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A recent paper (Burke, Collins & Mann 2000) presents the analysis of the Kband Hubble diagram of 76 brightest cluster galaxies (BCGs) in X-ray clusters and shows that the properties of BCGs depend on the X-ray luminosity (LX) of their host clusters. Unfortunately, the low numbers of nearby clusters in this sample makes it difficult to constrain evolutionary trends. In this letter we extend the ...
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The K-band Hubble diagram of brightest cluster galaxies (BCGs) is presented for a large, X-ray-selected cluster sample extending out to z=0.8. The controversy over the degree of BCG evolution is shown to be due to sample selection since the BCG luminosity depends on the cluster environment. Selecting only the most X-ray luminous clusters produces a BCG sample that shows, under the assumption of...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2020
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab6e6a