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Luminosity functions and quasar lifetimes in a sample of mid-IR selected quasars

Published online by Cambridge University Press:  29 January 2021

Susan E. Ridgway
Susan E. Ridgway*
Affiliation:
National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ, 85719, USA
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Abstract

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We have made a spectroscopic survey of luminous AGNs and quasars selected in the mid-infrared from Spitzer IRAC surveys. Mid-infrared selection is less affected by dust obscuration, and we find more high redshift quasars than are found in optical or hard X-ray surveys. We have derived luminosity functions for obscured and unobscured quasar populations, and we use these and spectral energy distribution fits to place constraints on host galaxy properties and quasar lifetimes.

Keywords

galaxies: activegalaxies: propertiesactive: quasarssurveys: infrared
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S356: Nuclear Activity in Galaxies Across Cosmic Time , October 2019 , pp. 290
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union