[53.07] The Far-Ultraviolet Spectrum of BD+60 2522

AAS 205th Meeting, 9-13 January 2005
Session 53 Hot Stars, Atmospheres and Winds
Poster, Tuesday, January 11, 2005, 9:20am-6:30pm, Exhibit Hall

Previous | Session 53 | Next

[53.07] The Far-Ultraviolet Spectrum of BD+60 2522

B.D. Moore, R.J. Dufour (Rice Univ), J.P. Aufdenberg (NOAO), R. Sankrit (Johns Hopkins Univ)

We present observations of the OIIIef star BD+60^\circ 2522 obtained with the Far Ultraviolet Spectroscopic Telescope (FUSE). The star is responsible for powering the H~{\sc ii} region S162, and its wind has swept up some of the material within it into a spheroidal shell. We construct a detailed model for the star and its wind based on this spectrum and others in the literature. In particular, we focus on the P Cygni profile of the C~{\sc iii} 1175 Å.

Previous studies of BD+60^\circ 2522 assign it a stellar type of O6.5 giant. Models of photoionized structures in the H~{\sc ii} region, however, suggest the shape for the UV continuum more appropriate to an O9 giant. Based on these, there is also a discrepancy in the shape of the interstellar curve towards the star. We discuss our model of BD+60^\circ 2522 in the context of these discrepancies.

This research was supported in part by NASA grant NAG5-13720 to Rice University.

Previous | Session 53 | Next