NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-24 T23:27:49 PDT
Help | Comment | NED Home

For refcode 2001ApJ...554L.129M:
Retrieve 365 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2001ApJ...554L.129M The RE-{sigma} Relation for Galaxies and Clusters of Galaxies Andisheh Mahdavi and Margaret J. Geller Harvard-Smithsonian Center for Astrophysics, MS 10, 60 Garden Street, Cambridge, MA 02138; amahdavi@cfa.harvard.edu, mgeller@cfa.harvard.edu Received 2001 April 4; accepted 2001 May 15; published 2001 June 13 ABSTRACT We demonstrate that individual elliptical galaxies and clusters of galaxies form a continuous X-ray luminosity-velocity dispersion (L_X_- {sigma}) relation. Our samples of 280 clusters and 57 galaxies have L_X_ is proportional to {sigma}4.4 and L_X_ is proportional to {sigma}10, respectively. This unified L_X_-{sigma} relation spans 8 orders of magnitude in L_X_ and is fully consistent with the observed and theoretical luminosity-temperature scaling laws. Our results support the notion that galaxies and clusters of galaxies are the luminous tracers of similar dark matter halos. Subject headings: galaxies: clusters: general-X-rays: galaxies
Retrieve 365 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home