Djorgovski, S. and de Carvalho, R. (1990) Optical and X-Ray Properties of Elliptical Galaxies. In: Windows on Galaxies. Astrophysics and Space Science Library. No.160. Springer , Dordrecht, pp. 307-310. ISBN 978-94-010-6731-7. https://resolver.caltech.edu/CaltechAUTHORS:20190730-102943527
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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.
| Item Type: | Book Section | ||||||||||
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| 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. | ||||||||||
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| Subject Keywords: | Velocity Dispersion; Elliptical Galaxy; Tidal Interaction; Anisotropy Index; Distance Indicator | ||||||||||
| Series Name: | Astrophysics and Space Science Library | ||||||||||
| Issue or Number: | 160 | ||||||||||
| DOI: | 10.1007/978-94-009-0543-6_40 | ||||||||||
| Record Number: | CaltechAUTHORS:20190730-102943527 | ||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20190730-102943527 | ||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||
| ID Code: | 97515 | ||||||||||
| Collection: | CaltechAUTHORS | ||||||||||
| Deposited By: | Tony Diaz | ||||||||||
| Deposited On: | 01 Aug 2019 20:40 | ||||||||||
| Last Modified: | 16 Nov 2021 17:32 |
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