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Title

On broken structural and dynamical homology of elliptical galaxies: a Virgo-Fornax distance modulus

Author(s)

Graham, Alister W.

Abstract

This paper presents an extension to the work of D'Onofrio et al. (1997) on the Fundamental Plane (FP), in which a distance modulus between the Virgo and Fornax clusters was derived. In addressing the broken dynamical homology, implied by the broken structual homology (Caon, Capaccioli & D'Onofrio 1993; Graham et al. 1996), the resulting FP that is constructed is found to more closely resemble the plane predicted from the virial theorem. Using the FP as a distance estimator, the Virgo-Fornax distance modulus is reduced from +0.45±16 mag to +0.25±0.12 mag when the influence of broken dynamical homology is incorporated.

Publication type

Conference paper

Source

Memorie della Società Astronomica Italiana: Proceedings of 'Views on Distance Indicators', Sant'Agata sui Due Golfi, Massa Lubrense, Italy, 03-06 September 1997 / M. Arnaboldi, F. Caputo and A. Rifatto (eds.), Vol. 69, pp. 275-278

Publication year

1998

Keyword(s)

Fornax cluster;  FP;  Fundamental Plane;  Virgo galaxy

Publisher

Fabrizio Serra Editore

ISBN

0037-8720 (series ISSN)

Publisher URL

http://sait.oat.ts.astro.it/Memlist.htm

Copyright

Copyright © Società Astronomica Italiana (1998). Published version of the paper reproduced here with the kind permission of the publisher.

Full text

Peer reviewed