Published 1990
| public
Book Section - Chapter
Optical and X-Ray Properties of Elliptical Galaxies
- Creators
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Djorgovski, S.
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de Carvalho, R.
Abstract
We compare and correlate the x-ray properties of early-type galaxies with their optical properties, using the data from extensive, homogeneous optical photometry surveys. Bivariate scaling solutions are found for the x-ray luminosities in terms of the optical surface brightness and velocity dispersion. A new quantity, the anisotropy index (AI) is defined. X-ray luminosities are found to correlate well with the AI. This is tentatively interpreted as a suggestion that mergers and tidal interactions played an important role in generation of the x-ray coronae in elliptical galaxies.
Additional Information
© 1990 Kluwer Academic Publishers. This work was supported in part by California Institute of Technology, NASA HEAO-B Data Analysis Program, and a fellowship from the Alfred P. Sloan Foundation to SD. RdC is on leave from Observatorio Nacional, CNPq, Rio de Janeiro, Brasil. SD would like to thank to the A.A.S. for a travel grant.Additional details
- Eprint ID
- 97515
- Resolver ID
- CaltechAUTHORS:20190730-102943527
- Caltech
- NASA
- Alfred P. Sloan Foundation
- American Astronomical Society
- Created
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2019-08-01Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Series Name
- Astrophysics and Space Science Library
- Series Volume or Issue Number
- 160