Journal Article

The Fundamental Plane for early-type galaxies: dependence on the magnitude range

A. Nigoche-Netro, A. Ruelas-Mayorga and A. Franco-Balderas

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 392, issue 3, pages 1060-1069
Published in print January 2009 | ISSN: 0035-8711
Published online January 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.14145.x
The Fundamental Plane for early-type galaxies: dependence on the magnitude range

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Studying three samples of early-type galaxies, which include approximately 8800 galaxies and cover a relatively ample magnitude range (〈ΔM〉∼ 5.5 mag), we find that the coefficients as well as the intrinsic dispersion of the Fundamental Plane depend on the width and brightness of the magnitude range within which the galaxies are distributed. We analyse this dependence, and the results show that it is due to the fact that the distribution of galaxies in the space defined by the variables depends on the luminosity.

Keywords: galaxies: fundamental parameters; galaxies: elliptical and lenticular, cD

Journal Article.  7412 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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