AAS 203rd Meeting, January 2004
Session 78 Quasars and QSOs
Poster, Wednesday, January 7, 2004, 9:20am-6:30pm, Grand Hall

[Previous] | [Session 78] | [Next]

[78.20] The Reddest Quasars - Below the APM Detection Threshold

E. Glikman, D. J. Helfand (Columbia U.), M. D. Gregg (UC Davis), M. Lacy (SIRTF), R. H. Becker (UC Davis), R. L. White (STScI)

We have constructed a sample of bright near-infrared sources which are both detected at radio wavelengths and are undetected on the POSS I plates in order to search for a population of dust-obscured quasars. Optical and infrared spectroscopic followup of the sample has led to the discovery of seventeen heavily reddened quasars (B-K>6), and has allowed us to define a region in the R-K, J-K color plane in which 50% of the objects are quasars. We compare the surface density of this previously overlooked population to that of UVX- and radio-selected quasars, finding that they comprise at least ~5% of the total quasar population for K<16.

[Previous] | [Session 78] | [Next]

Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.