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Stellar population synthesis: Application To Galactic Bulges

Published online by Cambridge University Press:  07 August 2017

N. Arimoto
N. Arimoto*
Affiliation:
Institut für Theoretische Astrophysik der Universität Heidelberg, Im Neuenheimer Feld 561, W6900, Heidelberg 1, Germany Institute of Astronomy, The University of Tokyo, Mitaka, Tokyo 181, Japan

Abstract

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The stellar populations give traces of the formation history of the bulges. The metallicity distribution of K-giants in the Galactic bulge resembles to that of the giant ellipticals. There seems to be no conspicuous colour-magnitude relation intrinsic to the bulges. This can be explained if the bulges formed by the dissipative collapse of central regions of proto-galaxies followed by the supernova-driven bulge wind which was induced later than the dwarf ellipticals of the similar mass (the biased wind). Unfortunately, the observational data available at present of stellar populations of the bulges are not yet sufficient to get a firm conclusion on the origin of the bulges.

Keywords

population synthesiscolour-magnitude relationmetallicity distributionbulge formationdisc galaxies
Type
Invited Reviews
Information
Symposium - International Astronomical Union , Volume 153: Galactic Bulges , 1993 , pp. 133 - 150
Copyright
Copyright © Kluwer 1993 

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