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Host Galaxies of Young Dust-Reddened Quasars

Urrutia, T. and Lacy, M. and Becker, R. and Glikman, E. (2009) Host Galaxies of Young Dust-Reddened Quasars. In: The starburst-AGN connection. ASP Conference Series. No.408. Astronomical Society of the Pacific , San Francisco, CA, pp. 299-302. ISBN 978-1-58381-696-7.

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We present results on a multiwavelength campaign to identify the nature of dust-reddened Type 1 quasars. These quasars were selected by matching FIRST, 2MASS and very red optical counterparts with r' − K > 5. We find a very high fraction of Low Ionization Broad Absorption Line Quasars (LoBALs) among AGN selected with this method, perhaps a sign of quasar feedback. From X-ray observations and Balmer decrement measurements, the obscuring dust is most likely located in a cold absorber such as the host galaxy, rather than from a torus near the AGN. Hubble ACS imaging of a sub-sample of these sources showed a very high fraction of interacting and merging systems. The quasars appear to be very young in which dust from the merging galaxies is still settling in. Spitzer IRS and MIPS data show star formation signatures and deep Silicate absorption features in these objects, but overall the quasar is the dominant source in the Mid-infrared.

Item Type:Book Section
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URLURL TypeDescription
Urrutia, T.0000-0001-6746-9936
Lacy, M.0000-0002-3032-1783
Glikman, E.0000-0003-0489-3750
Additional Information:© 2009 Astronomical Society of the Pacific.
Series Name:ASP Conference Series
Issue or Number:408
Record Number:CaltechAUTHORS:20100915-080558004
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19959
Deposited By: Tony Diaz
Deposited On:16 Sep 2010 23:22
Last Modified:04 Nov 2019 02:11

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