Volume 403, Number 1, May III 2003
|Page(s)||111 - 117|
|Published online||29 April 2003|
Spectroscopy of early-type star candidates in M 33 and NGC 6822. II*
INAF - Catania Astrophysical Observatory, via S. Sofia n. 78, 95123, Catania, Italy e-mail: email@example.com
2 Center for Astrophysical Sciences, The Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218-2695, USA e-mail: firstname.lastname@example.org
3 Instituto de Astrofisica de Canarias, via Láctea, 38200 La Laguna, Tenerife, Spain e-mail: email@example.com
4 Consejo Superior de Investigaciones Cientificas, Spain
Corresponding author: G. Catanzaro, firstname.lastname@example.org
Accepted: 5 March 2003
We present ground-based spectra of early-type star candidates in the Local Group galaxies M 33 and NGC 6822 taken at the 4.2 m William Herschel Telescope (La Palma, Spain). Photospheric parameters Teff and were derived by LTE modeling of the Balmer lines. When possible, mass-loss rates were calculated from the Hα profiles computing emission and scattering in the wind with the method of Scuderi et al. ([CITE]). Five hot star candidates were found in M 33, out of seven stars analyzed, and two out of three in NGC 6822.
Key words: galaxies: individual: M 33, NGC 6822 / stars: early type / stars: fundamental parameters / stars: atmospheres / stars: mass loss
© ESO, 2003
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