Preliminary analysis of CCD spectra obtained by the 6m SAO telescope is presented. We have used simple H-He NLTE model atmospheres computed by TLUSTY to derive the basic parameters of the star.
@article{arxiv.astro-ph/0501082,
title = {Preliminary analysis of an extreme helium sdO star: BD+25 4655},
author = {J. Budaj and V. Elkin and I. Hubeny},
journal= {arXiv preprint arXiv:astro-ph/0501082},
year = {2007}
}
Comments
12 pages, 5 figures, poster E44 at the IAU Symp.210, published on the CD-rom accompanying the proceedings