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Paper: The Galactic Bulge Mira Population
Volume: 374, From Stars to Galaxies: Building the Pieces to Build Up the Universe
Page: 193
Authors: Blommaert, J.A.D.L.; Groenewegen, M.A.T.
Abstract: On basis of OGLE-II lightcurves and 2MASS near-infrared data we studied a large sample of Mira variables in the Bulge of our Galaxy. The sample covers a wide range of latitudes (1.2&3176; < |b| < 6°) and longitudes (349° < l < 11°). On basis of the variability period distributions we conclude that the Miras in the Bulge are of intermediate age (1-3 Gyr). Close to the Galactic Centre a younger population, less than 1 Gyr, exists.
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