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The universality(?) of distance-indicator relations

Djorgovski, S. and de Carvalho, R. and Han, M.-S. (1988) The universality(?) of distance-indicator relations. In: The Extragalactic Distance Scale: Proceedings of the ASP 100th Anniversary Symposium. Astronomical Society of the Pacific Conference Series. No.4. Astronomical Society of the Pacific , San Francisco, CA, pp. 329-343. ISBN 0-937707-21-X.

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The origin of distance-indicator relations for galaxies is examined, as well as the possibility that they may vary with the large-scale environment. The relations reflect formative and evolutionary process of galaxies, and contain some information about them. They are expected to depend on the environment in a complex manner. There are hints that both the Tully-Fisher relation for the spirals, and the Dn-sigma relation for the ellipticals may depend on the parent cluster properties such as richness, velocity dispersion, or galaxy number density, but these tentative dependences are hard to separate from the selection effects. If the distance-indicators vary from one cluster to another, some of the large peculiar motions claimed in the literature are partly spurious. Until the environmental effects on distance-indicator relations are better understood, their use for the mapping of large-scale velocity fields and measurements of the far-field Hubble constant may be premature.

Item Type:Book Section
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Djorgovski, S.0000-0002-0603-3087
de Carvalho, R.0000-0002-1283-3363
Additional Information:© 1988 Astronomical Society of the Pacific. Provided by the NASA Astrophysics Data System.
Series Name:Astronomical Society of the Pacific Conference Series
Issue or Number:4
Record Number:CaltechAUTHORS:20190806-141501504
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97677
Deposited By: Tony Diaz
Deposited On:07 Aug 2019 17:29
Last Modified:09 Mar 2020 13:19

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