Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20911103u&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #111.03; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
In the last few years X-ray and Infrared surveys have shown that optically selected quasars constitute less that half of the total quasar population. Dust-reddened quasars present a new and largely uninvestigated quasar population, which may have many members, which are at an earlier stage in their quasar activity in which gas and dust debris from the merger shield the view into the active nucleus. We have carried out surveys to identify these so-called red quasars and have followed them up with Chandra, HST and the VLA.
My talk will focus on Hubble ACS images of 13 Type-1 dust reddened quasars selected from the FIRST/2MASS survey. The images show strong evidence of interaction in 11 of the 13 quasars even before performing quasar subtraction. None of the host galaxies fits a perfect elliptical profile. The red quasar phenomenon seems to have an evolutionary explanation in that the young quasar spends a fraction of its lifetime enshrouded in an interacting galaxy as has been recently suggested by theoretical simulations. This might
be further indication of a link between AGN and Starburst galaxies.
Becker Robert
Gregg Michael D.
Lacy Mark
Urrutia Tanya
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