The Wolf-Rayet Binary WR 141 (WN5O + O5 V-III) Revisited

Details The Wolf-Rayet Binary WR 141 (WN5O + O5 V-III) Revisited The Wolf-Rayet Binary WR 141 (WN5O + O5 V-III) Revisited

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pasp..110.1416m&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 110, Issue 754, pp. 1416-1422.

Astronomy and Astrophysics

Astronomy

16

Stars: Binaries: Spectroscopic, Stars: Wolf-Rayet, Stars: Individual: Alphanumeric: Wr 141

Scientific paper

We combine all previously published radial velocity measurements of the spectroscopic binary WR 141 with new CCD data from 1988-1989 and 1992, complemented by polarimetric broadband measurements from 1989. This enables us to refine the orbital elements [P=21.6895 days, e=0.018, K_WR=118 km s^-1, K_O=(163-194) km s^-1], estimate the masses of the components [M_WR=(36-54) M_solar, M_O=(26-33) M_solar for orbital inclination i=68^deg], and restore the spectrum of the O star via a specifically designed decomposition algorithm. Along with pronounced erratic variations, the spectral lines of the WR component demonstrate systematic phase-locked variability induced by the radiation field of the hot, luminous O companion.

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