a Survey of the Giant Branch in the Bulge of M31

Details a Survey of the Giant Branch in the Bulge of M31 a Survey of the Giant Branch in the Bulge of M31

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.2735r&link_type=abstract

HST Proposal ID #2735

Physics

Hst Proposal Id #2735

Scientific paper

I propose to survey the space distribution and abundances of the M giant population of the nuclear bulge of M31 using the F875M and F1042M filters of the WF/PC. The two filters isolate continuum points in the spectra of la giants, thus allowing measurement of the metallicity range of the population, which is predicted by theories of galaxy formation to become very narrow and metal rich near the nucleus. It is expected that the giant population will be resolved to within a few arc-seconds of the nucleus, allowing a test of whether the metal rich population is more centrally concentrated than the general stellar population, as predicted by dissipative models of galaxy formation. The luminosities and colors will also place strong constraint on the fraction of intermediate-age stars in the bulge of M31

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