3 papers
astro-ph2000
On the Origin of Subdwarf B Stars and Related Metal-Rich Binaries
Elizabeth M. Green, James Liebert, Rex A. Saffer
Mounting evidence from subdwarf B (sdB) stars in the galactic field and their recently discovered counterparts in old open clusters indicates that at least two thirds of local disk…
astro-ph2000
The Binary Origins of Hot Subdwarfs: New Radial Velocities
Rex A. Saffer, Elizabeth M. Green, Timothy P. Bowers
Multiple radial velocity observations have been obtained for a large sample of local field subdwarf B (sdB) stars over a period of two years. SdB stars appear to fall into three di…
astro-ph1997
PG 1002+506: a Be Star Apparently at Z Greater Than +10 kpc
F. A. Ringwald, W. R. J. Rolleston, R. A. Saffer +1
PG 1002+506 is found to be a Be star, one of two so far found by the Palomar-Green survey. Its spectrum is classified as a B5 +/- 1 Ve, with Teff = 14,900 +/- 1200, log g = 4.2 +/-…