M31 Globular Clusters in the HST Archive: I. Cluster Detection and Completeness

  title={M31 Globular Clusters in the HST Archive: I. Cluster Detection and Completeness},
  author={Pauline Barmby and John Peter Huchra},
  journal={arXiv: Astrophysics},
Globular clusters at the distance of M31 have apparent angular sizes of a few arcseconds. While many M31 GCs have been detected and studied from ground-based images, the high spatial resolution of HST allows much more robust detection and characterization of star cluster properties. We present the results of a search of 157 HST/WFPC2 images of M31: we found 82 previously-cataloged globular cluster candidates as well as 32 new globular cluster candidates and 20 open cluster candidates. We… Expand
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Testing Population Synthesis Models with Globular Cluster Colors.
  • Barmby, Huchra
  • Physics, Medicine
  • The Astrophysical journal
  • 2000
The predicted simple stellar population colors of three population synthesis models are compared to the intrinsic colors of Galactic and M31 globular clusters to imply that conditions for cluster formation must have existed for a substantial fraction of the galaxies' lifetimes. Expand
Faint halo globular clusters and the GCLF in M31
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Metallicities for 150 globular clusters associated with M31 are derived using the strengths of six absorption features in the cluster-integrated spectra. The properties of the M31 cluster system areExpand
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A code has been developed to investigate the kinematic properties of stellar populations of the Galaxy by modeling the distributions of proper motion and line-of-sight velocity. The coordinate framesExpand