A&A 413, 323-327 (2004)
Physical parameters of helium-rich subdwarf B stars from spectral energy distributionsA. Ahmad and C. S. Jeffery
Armagh Observatory, College Hill, Armagh BT61 9DG., N. Ireland, UK
(Received 15 July 2003 / Accepted 2 October 2003)
We present effective temperatures and angular radii for eleven helium-rich subdwarf B stars. These are measured using spectral energy distributions from archival IUE spectra and existing optical and infrared photometry. The data have been analysed using a grid of high-gravity helium-rich LTE model atmospheres and a -minimization procedure. The parameters derived here allow for independent verification of the parameters derived from the analysis of optical spectra.
Key words: stars: chemically peculiar -- stars: early-type -- subdwarfs -- stars: atmospheres -- stars: fundamental parameters
Offprint request: A. Ahmad, firstname.lastname@example.org
© ESO 2004