Polarimetry of four Wolf-Rayet stars

Details Polarimetry of four Wolf-Rayet stars Polarimetry of four Wolf-Rayet stars

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...337..872s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 337, Feb. 15, 1989, p. 872-887. Research supported by DFG.

Mathematics

Logic

22

Binary Stars, Polarimetry, Polarization Characteristics, Wolf-Rayet Stars, Broadband, Radii, Stellar Mass, Stellar Winds

Scientific paper

Time-dependent broadband linear polarimetric observations of four WR stars are presented. On a time basis of days, WR 3 and SR 131 displayed no polarization variability above measurement errors. The position angle of WR 3 was consistent with the polarization being mainly of interstellar origin. The polarization of WR 103 showed variations, in one night on a time scale of hours. The polarization of WR 151 showed a modulation with orbital phase that was used to derive an estimate of the WN5 and O8 star's masses, of 6 and 14 solar masses, respectively. Four phenomenological types of polarization variability are introduced, and the stars are described in terms of them.

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