Globular Clusters in M31 and NGC205 (WC11): Cycle 4

Details Globular Clusters in M31 and NGC205 (WC11): Cycle 4 Globular Clusters in M31 and NGC205 (WC11): Cycle 4

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5112w&link_type=abstract

HST Proposal ID #5112

Computer Science

Hst Proposal Id #5112 Stellar Populations

Scientific paper

HR diagrams and radial density profiles will be studied for three globular clusters in M31 and one in NGC205 using direct Wide Field Camera images in filters F555W and F814W. The clusters span a range in line strength from H VIII and M IV (very metal-poor), through M II, to K58 (slightly sub-solar). Problems to be studied include the luminosity fuction of stars on the cluster giant branch, their spread in temperature, horizontal-branch morphology, and the tidal radii of the clusters. Of special interest is the apparent magnitude of the horizontal branch and its possible utility as a distance indicator. The HR diagram of any background stellar population in the halo of M31 and the general field of NGC205 will also be compiled, and the age and metallicity distribution of the background population studied.

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