Imaging of UV Bright Stars in Metal Rich Globular Clusters

Details Imaging of UV Bright Stars in Metal Rich Globular Clusters Imaging of UV Bright Stars in Metal Rich Globular Clusters

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.3804r&link_type=abstract

HST Proposal ID #3804

Physics

Hst Proposal Id #3804

Scientific paper

The FOC will be used to obtain high-resolution images of the cores of 6 metal-rich globulars, 4 of which are known to have far-UV flux based on IUE observations. Photometry with FOC will give luminosities, temperatures, and total numbers of far-UV sources. These data will permit the stars to be placed in an HR diagram, and will constrain the evolutionary lifetimes in the UV bright phases. It will be possible to determine whether the UV bright stars are extreme horizontal branch, post-AGB, blue stragglers or accreting binaries. Because King has already imaged NGC 6624 in the UV, the filter imaging for this cluster is replaced by an objective-prism exposure.

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