The Galactic Bulge Mira Population

Details The Galactic Bulge Mira Population The Galactic Bulge Mira Population

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..374..193b&link_type=abstract

From Stars to Galaxies: Building the Pieces to Build Up the Universe. ASP Conference Series, Vol. 374, proceedings of the confer

Physics

Scientific paper

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^o < |b| < 6^o) and longitudes (349^o < l < 11^o). 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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