2004/03/09 by A. Finoguenov, U. G. Briel, J. P. Henry +4 · 3 citations
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Cosmic Phenomena #Brightest cluster galaxy #Cluster (spacecraft) #Coma (optics) #Coma Cluster #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Galaxy groups and clusters #Luminosity #Luminosity function #Physics #Redshift #Sky #astro-ph
paper · pdf · doi:10.1051/0004-6361:20035765
published as Astron.Astrophys. 419 (2004) 47-61 · 16 pages, 2004 A&A in press
arxiv created 2004/03/09 · openalex publication_date 2004/04/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The XMM-Newton survey of the Coma cluster of galaxies covers an area of 1.86 square degrees with a mosaic of 16 pointings and has a total useful integration time of 400 ks. Detected X-ray sources with extent less than were correlated with cataloged galaxies in the Coma cluster region. The redshift information, which is abundant in this region of the sky, allowed us to separate cluster members from background and foreground galaxies. For the background sources, we recover a typical in the flux range ergs s-1 cm-2 in the 0.5-2.0 keV band. The X-ray emission from the cluster galaxies exhibits X-ray colors typical of thermal emission. The luminosities of Coma galaxies lie in the ergs s-1 interval in the keV band. The luminosity function of Coma galaxies reveals that their X-ray activity is suppressed with respect to the field by a factor of 5.6, indicating a lower level of X-ray emission for a given stellar mass.