FGS Observations of a Halo Population Binary

Details FGS Observations of a Halo Population Binary FGS Observations of a Halo Population Binary

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6054o&link_type=abstract

HST Proposal ID #6054

Computer Science

Hst Proposal Id #6054 Cool Stars

Scientific paper

No direct determinations of masses for stars of the halo population currently exist. A number of halo spectroscopic binaries have recently been identified, and the system HD20039 appears to be resolvable with the HST. TRANSfer mode observations with the FGS will be used to obtain separations, position angles and magnitude differences at six orbital phases. When these data are combined with the spectroscopic elements, the orbit can be completely specified and the masses of the components determined.

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