Color and Metallicity Distributions of M81 Globular Clusters

Details Color and Metallicity Distributions of M81 Globular Clusters Color and Metallicity Distributions of M81 Globular Clusters

2005-03-29

arxiv.org/abs/astro-ph/0503616v1

Publ.Astron.Soc.Pac. 117 (2005) 256-261

Astronomy and Astrophysics

Astrophysics

Accepted for Publication in PASP, 9 pages, 6 figures

Scientific paper

10.1086/428276

In this paper we present catalogs of photometric and spectroscopic data for M81 globular clusters (GCs). The catalogs include B- and V- photometric and reddening data of 95 GCs, and spectroscopic metallicities of 40 GCs in M81. Using these data, we make some statistical correlations. The results show that the distributions of intrinsic B and V colors and metallicities are bimodal, with metallicity peaks at [Fe/H]=-1.45 and -0.53, respectively as has been demonstrated for our Milky Way and M31. The relation between spectroscopic metallicity and intrinsic B and V color also exists as it does for the Milky Way and M31.

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