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Dynamical state of pairs of galaxies

Published online by Cambridge University Press:  12 April 2016

I. D. Karachentsev
I. D. Karachentsev*
Affiliation:
Special Astrophysical Observatory, Academy of Sciences of USSR

Extract

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Les estimations de masses de galaxies doubles sont obtenues sur la base des observations récentes de 148 paires de galaxies pour lesquelles les vitesses radiales des deux composantes ont été mesurées.

On montre que le rapport masse orbitale moyenne sur luminosité dépend essentiellement du type morphologique des galaxies doubles et du type d’interaction entre les deux composantes de la paire. Les valeurs minimales de ce rapport sont obtenues pour les galaxies doubles dont les caractéristiques d’interaction sont linéaires, à savoir: ponts, queues, ainsi que pour les paires avec des composantes compactes et des galaxies de Markarian,

La relation empirique entre le rapport masse-luminosité et la séparation spatiale des composantes de paires ne montre pas de façon évidente l’existence de halos stellaires cachés autour des galaxies doubles,

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 37: Décalages vers le rouge et Expansion de l’Univers , 1977 , pp. 321 - 335
Copyright
Copyright © Editions du CNRS 1977

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