Siana, B. and Polletta, M. and Smith, H. E. and Lonsdale, C. J. and Gonzalez-Solares, E. and Farrah, D. and Babbedge, T. S. R. and Rowan-Robinson, M. and Surace, J. and Shupe, D. and Fang, F. (2008) The z ~ 3 QSO Luminosity Function with SWIRE. In: The Second Annual Spitzer Science Center Conference: Infrared Diagnostics of Galaxy Evolution. ASP Conference Series. Vol.381. Astronomical Society of the Pacific , San Francisco, CA, pp. 454-457. ISBN 978-1-58381-325-6. https://resolver.caltech.edu/CaltechAUTHORS:20100726-103821078
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Abstract
We use a simple optical/infrared photometric selection of high redshift QSOs which identifies a Lyman Break in the optical and requires a red IRAC color to distinguish QSOs from common interlopers. We find 100 U-dropout (z ~ 3) QSO candidates with r′ < 22 within 11.2 deg^2 in the ELAIS-N1 & ELAIS-N2 fields in the Spitzer Wide-area Infrared Extragalactic (SWIRE) Legacy Survey. Spectroscopy of 10 candidates shows that they are all QSOs with 2.83 < z < 3.44. We use detailed simulations which incorporate variations in QSO SEDs, IGM transmission and imaging depth to derive a completeness of 85- 90% between 3.0 < z < 3.4. The resulting luminosity function is two magnitudes fainter than SDSS and, when combined with those data, gives a faint end slope β = 1.62±0.18, consistent with measurements at z < 2 and steeper than initial measurements at the same redshift.
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Additional Information: | © 2008 Astronomical Society of the Pacific. | ||||||||||||||
Group: | Infrared Processing and Analysis Center (IPAC) | ||||||||||||||
Series Name: | ASP Conference Series | ||||||||||||||
Record Number: | CaltechAUTHORS:20100726-103821078 | ||||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20100726-103821078 | ||||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||
ID Code: | 19179 | ||||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||||
Deposited By: | Jason Perez | ||||||||||||||
Deposited On: | 02 Aug 2010 03:31 | ||||||||||||||
Last Modified: | 30 Sep 2020 18:22 |
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