2009/07/29 by M. Pović, M. Sánchez-Portal, M. Sánchez‐Portal +9
Engineering · Physics and Astronomy · #Advanced Optical Sensing Technologies #Astronomy #Astrophysics #CCD and CMOS Imaging Sensors #Flux (metallurgy) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Materials science #Optics #Physics #X-ray #astro-ph.CO
paper · pdf · doi:10.1088/0004-637x/702/1/l51
9 pages, 3 figures, accepted for publication in ApJ Letters
arxiv created 2009/07/29 · openalex publication_date 2009/08/13 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Active galactic nuclei (AGNs) play an important role in many aspects of modern cosmology, and of particular interest is the issue of the interplay between AGNs and their host galaxy. Using X-ray and optical data sets, we have explored the properties of a large sample of AGNs in the Subaru/ XMM-Newton Deep Survey field, and studied their evolution in relation with the evolution of their host galaxy. We present here an anticorrelation between X-ray-to-optical flux (X/O) ratio and galaxy light concentration ( C ), which has been found for the first time and might suggest that early-type galaxies, having poor matter supply to feed the AGN activity, have lower Eddington rates than those of late-type galaxies.