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IR Spectroscopy of High-Redshift Quasars

Published online by Cambridge University Press:  12 April 2016

Jill Bechtold ,
Joseph Shields ,
Marcia Rieke ,
Peiwen Ji ,
Jennifer Scott ,
Olga Kuhn ,
Martin Elvis  and
Richard Elston
Jill Bechtold
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Joseph Shields
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Marcia Rieke
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Peiwen Ji
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Jennifer Scott
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Olga Kuhn
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
Martin Elvis
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA
Richard Elston
Affiliation:
Cerro Tololo Inter-American Observatory, La Serena, Chile

Abstract

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We have obtained near-IR, optical, and soft X-ray spectrophotometry for a number of bright quasars with 2 ≲ z ≲ 4. The observed ratios of Lyα/Hβ in this sample are smaller than Case B, and span a similar range to those seen at lower redshift. A correlation between the line width of Hβ and X-ray spectral index found for low-redshift PG quasars is also seen for the high-redshift objects.

Type
II. Broad Emission Lines
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 122 - 125
Copyright
Copyright © Astronomical Society of the Pacific 1997

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