Color and Metallicity Distributions of M81 Globular Clusters
arXiv:astro-ph/0503616 · doi:10.1086/428276
Abstract
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.
arXiv commentAccepted for Publication in PASP, 9 pages, 6 figures
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- SAO-6m Telescope Spectroscopic Observations of Globular Clusters in Nearby Galaxies
- Red Supergiants in the Disk of M81: Tracing the Spatial Distribution of Star Formation 25 Million Years in the Past
- Spectral Energy Distributions of M81 Globular Clusters in BATC Multicolor Survey
- Metal Abundance Properties of M81 Globular Cluster System
- Massive Star Cluster Populations in Irregulars as Probable Younger Counterparts of Old Metal-Rich Globular Cluster Populations in Spheroids
- Metal Abundance and Kinematical Properties of M81 Globular Cluster System
- Old Metal-rich Globular Cluster Populations: Peak Color and Peak Metallicity Trends with Mass of Host Spheroids