Can Mira Variables Tell us the Chemical Abundances in Stellar Systems?

Abstract

A period-metallicity relation for oxygen-rich Miras derived from globular clusters is applied to similar variables in the galactic Bulge. The metallicity distribution in the Bulge thus obtained is in good agreement with that derived from K giants. This suggests that the periods of Miras are useful indicators of metallicity distributions, at least in old systems such as galactic bulges. For systems such as the LMC the situation is not yet clear.

8 pages, 2 figures. Proceedings of Roma-Trieste Workshop on: The Chemical Evolution of the Milky Way. To be published by Kluwer; editors: F. Giovannelli & F. Matteucci

References in corpus (1)

• The Chemical Compositions of the SRd Variable Stars-- II. WY Andromedae, VW Eridani, and UW Librae

Cited by in corpus (7)

• Near-Infrared Photometry of Carbon Stars
• Carbon-Rich Mira Variables: Kinematics and Absolute Magnitudes
• The period--luminosity relation for Mira variables in the Milky Way using Gaia DR3: a further distance anchor for $H_0$
• A kinematic calibration of the O-rich Mira variable period-age relation from Gaia
• The Mira-based distance to the Galactic centre
• The Galactic Kinematics of Mira Variables
• Luminosities of AGB Variables