Physical parameters of helium-rich subdwarf B stars from spectral energy distributions
Open Access
- 17 December 2003
- journal article
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 413 (1) , 323-327
- https://doi.org/10.1051/0004-6361:20031577
Abstract
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.Keywords
This publication has 24 references indexed in Scilit:
- Physical parameters of helium-rich subdwarf B stars from medium resolution optical spectroscopyAstronomy & Astrophysics, 2003
- Physical parameters for subdwarf B stars with composite spectraAstronomy & Astrophysics, 2002
- Flash Mixing on the White Dwarf Cooling Curve: Understanding Hot Horizontal Branch Anomalies in NGC 2808The Astrophysical Journal, 2001
- Physical parameters of sdB stars from spectral energy distributionsAstronomy & Astrophysics, 2001
- $uvby\beta$ photoelectric photometric catalogueAstronomy and Astrophysics Supplement Series, 1998
- UV Spectrophotometry of the Hottest Stars from the Southern HK SurveyThe Astrophysical Journal, 1995
- Spectroscopy of hot stars in the Galactic haloThe Astronomical Journal, 1992
- On the number-mass distribution of degenerate dwarfs produced by interacting binaries and evidence for mergers of low-mass helium dwarfsThe Astrophysical Journal, 1986
- The Palomar-Green catalog of ultraviolet-excess stellar objectsThe Astrophysical Journal Supplement Series, 1986
- The luminosity function of hot white dwarfsThe Astrophysical Journal, 1980