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astro-ph2006
Heavy metals and lead isotopes in sdB stars
S. O'Toole, U. Heber
We present a detailed abundance analysis of high-resolution ultraviolet echelle spectra of five subdwarf B stars obtained with HST-STIS The goal of our observations was to test the…
astro-ph2006★ 1 cited
The peculiar sdB NGC6121-V46: A low-mass double degenerate ellipsoidal variable in a globular cluster
S. J. O'Toole, R. Napiwotzki, U. Heber +4
The variable sdB known as V46 in the globular cluster M4 has remained enigmatic since its discovery almost 10 years ago. We present here radial velocity measurements obtained from…
astro-ph2006★ 14 cited
First Attempt at Spectroscopic Detection of Gravity Modes in a Long-Period Pulsating Subdwarf B Star -- PG 1627+017
B. -Q. For, E. M. Green, D. O'Donoghue +7
In the first spectroscopic campaign for a PG 1716 variable (or long-period pulsating subdwarf B star), we succeeded in detecting velocity variations due to g-mode pulsations at a l…