Physics
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6289l&link_type=abstract
HST Proposal ID #6289
Physics
Hst Proposal Id #6289 Hot Stars
Scientific paper
This proposal concludes GTO observations by D. L. Lambert using the GHRS. Four problems are addressed. (1) The ultraviolet spectrum of Eps Aur will be obtained from 1190-1450A with G140L. IUE observations show that in this interval the spectrum is emitted by the enigmatic secondary and not the A-type supergiant. These observations will provide the first detailed spectrum of the secondary. (2) Two high galactic latitude B stars will be observed at 1360A with G160M to obtain the boron abundance. These stars are too far from the galactic plane to have been born in the plane and, therefore, the boron abundance will refer to their sites of formation, presumably gas clouds far from the plane. (3) Theta Uma will be observed at 2090A with ECH-B in an attempt to obtain the 10B/11B isotopic ratio from the B I 2089A resonance line. (4) Interstellar CO bands in Zeta Oph will be observed with ECH-A to high S/N in order to define the line profiles, to search for weak high rotational lines and to confirm the isotopic ratios derived previously from G160M spectra.
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