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Optical and X-Ray Properties of Elliptical Galaxies

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.

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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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URLURL TypeDescription ReadCube access
Djorgovski, S.0000-0002-0603-3087
de Carvalho, R.0000-0002-1283-3363
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.
Funding AgencyGrant Number
Alfred P. Sloan FoundationUNSPECIFIED
American Astronomical SocietyUNSPECIFIED
Subject Keywords:Velocity Dispersion; Elliptical Galaxy; Tidal Interaction; Anisotropy Index; Distance Indicator
Series Name:Astrophysics and Space Science Library
Issue or Number:160
Record Number:CaltechAUTHORS:20190730-102943527
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97515
Deposited By: Tony Diaz
Deposited On:01 Aug 2019 20:40
Last Modified:16 Nov 2021 17:32

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