Published July 1999
| Published + Submitted
Journal Article
Open
Variability of Quasars at 10 Microns
- Creators
- Neugebauer, G.
- Matthews, K.
Chicago
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Abstract
Twenty-five low-redshift quasars have been monitored for several decades at five near- and midinfrared wavelengths to detect rapid variations that would indicate that a nonthermal component was present in the "10 μm bump." Such variability has apparently been detected in several radio-loud quasars and in the radio-quiet quasar PG 1535+547. In addition, the structure function of PG 1226+023 shows that an apparently periodic component is present in its near-infrared emission.
Additional Information
© 1999 The American Astronomical Society. Received 1999 March 9; accepted 1999 March 18. This paper is based on the text of the first author's Russell Lecture, delivered before the American Astronomical Society on 1997 January 13. A project of several decades duration cannot be contemplated without the support and help of a large number of people. We thank Lee Armus, Eric Becklin, Jay Elias, James Graham, Todd Hunter, Jon Kawamora, David Shupe, Tom Soifer, and Alycia Weinberger as well as the night assistants Rick Burruss, Juan Carrasco, Gene Hancock, Skip Staples, and Gary Tuton and the entire staffs of Palomar and Mount Wilson Observatories for help obtaining these data. We acknowledge helpful discussions with Lee Armus, Peter Barthel, Roger Blandford, David Hogg, Marcia Neugebauer, Sterl Phinney, Annila Sargent, Tom Soifer, and Alycia Weinberger. Caltech, NSF, and NASA have supported us over the years.Attached Files
Published - Neugebauer_1999_AJ_118_35.pdf
Submitted - 9903363.pdf
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Neugebauer_1999_AJ_118_35.pdf
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Additional details
- Alternative title
- Variability of Quasars at 10 μm
- Eprint ID
- 74326
- Resolver ID
- CaltechAUTHORS:20170215-124414131
- Caltech
- NSF
- NASA
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2017-02-15Created from EPrint's datestamp field
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2021-11-11Created from EPrint's last_modified field