An archival search for UV spectroscopic variability of Wolf-Rayet (WR) stars

Details An archival search for UV spectroscopic variability of Wolf-Rayet (WR) stars An archival search for UV spectroscopic variability of Wolf-Rayet (WR) stars

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.281b.125s&link_type=abstract

In ESA, Proceedings of the Celebratory Symposium on a Decade of UV Astronomy with the IUE Satellite, Volume 2 p 125-128 (SEE N89

Astronomy and Astrophysics

Astronomy

1

Iue, Spaceborne Astronomy, Stellar Spectra, Ultraviolet Astronomy, Ultraviolet Spectra, Variability, Wolf-Rayet Stars, Astronomical Spectroscopy, Ultraviolet Spectroscopy

Scientific paper

In order to assess the ubiquity of stellar wind variability in Wolf-Rayet (WR) stars, spectroscopic variability for all galactic WR stars observed more than once at high resolution with IUE, excluding the well known spectroscopic binaries, was studied. This involved dearchiving, reducing on Starlink, and examining every HIRES WR image secured to date, embracing 15 stars and 111 spectra. A survey of the SWP spectra available is presented. Evidence of significant P Cygni profile variability is found in WR 22 (=HD 92740) and WR 137 (=HD 192641), but not in the other stars in the sample.

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