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Finding Hidden Quasars with UKIDSS and AAOmega

Published online by Cambridge University Press:  01 August 2006

Natasha Maddox ,
P. C. Hewett ,
S. J. Warren  and
S. M. Croom
Natasha Maddox
Affiliation:
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK email: nmaddox@ast.cam.ac.uk
P. C. Hewett
Affiliation:
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK email: nmaddox@ast.cam.ac.uk
S. J. Warren
Affiliation:
Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London, SW7 2AZ, UK
S. M. Croom
Affiliation:
School of Physics, University of Sydney, NSW, 2006, Australia
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The debate regarding the number of dust-reddened quasars has been ongoing for several years. Selecting quasars based on a UV excess will exclude any quasar that has an SED that departs from the standard power-law or is experiencing obscuration from dust. As longer wavelengths are less affected by dust attenuation, it is advantageous to select quasar candidates in the NIR, but until now, there did not exist a dataset of sufficient depth and coverage suitable for undertaking such an experiment.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 415
Copyright
Copyright © International Astronomical Union 2007

References

Lawrence, A. et al. 2006, MNRAS, submitted, astro-ph/0604426Google Scholar
Maddox, N. & Hewett, P.C. 2006, MNRAS 367, 717Google Scholar
Warren, S.J., Hewett, P.C. & Foltz, C.B. 2000, MNRAS 312, 827CrossRefGoogle Scholar