Cosmic downsizing from an X-ray survey of active SDSS galaxies

Details Cosmic downsizing from an X-ray survey of active SDSS galaxies Cosmic downsizing from an X-ray survey of active SDSS galaxies

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..127m&link_type=abstract

XMM-Newton Proposal ID #04031909

Computer Science

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Sdssj1616+4702, Sdssj0137+0052, Sdssj0310+0029, Sdssj1014+5951, Sdssj1413+0143, Sdssj0011-0054, Sdssj1127-0112, Sdssj0317-0033, Sdssj0841+5455, Xmm-Newton Proposal 04031909

Scientific paper

15 percent of local galaxies in SDSS have optical emission lines indicating an active nucleus. We propose an XMM survey of a complete sample of z less than 0.05 SDSS galaxies that have these optical AGN signatures. The sample has measurements of inferred black hole mass, galaxy host type and structure, stellar mass, star formation rate and environment and provides a unique opportunity to study black hole accretion in the local universe. In particular, in this sample most AGN activity is apparent in moderate-mass black holes: we can measure "cosmic downsizing" in action at low redshift directly from the X-ray emission, link [OIII] measurement of accretion to hard-X-ray measurement across a range of AGN and galaxy types and measure X-ray absorption in a homogeneous sample.

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