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Supergiant Stars as Tracers of Galactic Chemical Composition

Published online by Cambridge University Press:  07 August 2017

A Arellano Ferro ,
L Parrao  and
L Mantegazza
A Arellano Ferro
Affiliation:
Instituto de Astronomia, UNAM, Mexico
L Parrao
Affiliation:
Instituto de Astronomia, UNAM, Mexico
L Mantegazza
Affiliation:
Dip. di Fisica Nucleare e Teorica, Universita di Pavia, Italia

Extract

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A photometric reddening-free calibration for [Fe/H] valid for giant and supergiant stars of intermediate temperature, has been obtained using the Strömgren uvbyß system. Galactic supergiants, supergiants in Magellanic Clouds and galactic metal deficient red giants with spectroscopic determinations of [Fe/H] were used as calibrators. The calibration can be used to predict [Fe/H] with an accuracy of 0.33 dex and shows the potential of supergiant stars as tracers of iron abundances in other galaxies.

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 164: Stellar Populations , 1995 , pp. 366
Copyright
Copyright © Kluwer 1995