Interstellar Ultraviolet Extinction Towards the Nitrogen Sequence Wolf-Rayet Stars

Details Interstellar Ultraviolet Extinction Towards the Nitrogen Sequence Wolf-Rayet Stars Interstellar Ultraviolet Extinction Towards the Nitrogen Sequence Wolf-Rayet Stars

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aca....45..641n&link_type=abstract

Acta Astronomica, v.45, pp.641-651, (1995).

Astronomy and Astrophysics

Astronomy

3

Ism: General, Circumstellar Matter, Stars: Wolf-Rayet

Scientific paper

With the archive IUE spectra of WR stars collected by Niedzielski and Rochowicz (1994) we obtain the UV extinction curve for WN stars. Using the two-color diagram method we can reach the goal almost independently, assuming only similar (b-v)_0 for all single galactic WN stars, what is discussed on the basis of latest results. The resulting extinction curve differs strongly shortwards of the 2200 bump from that of Seaton (1979) and is virtually identical to that of Krelowski and Papaj (1992). Assuming the power law shape of WN continua we obtain a new value of (b-v)_0=-0.22 for single WN stars and present E_{b-v} for 34 galactic WN stars.

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