Long-term APT photometry of the variable Wolf-Rayet star HD 191765 - LVB-type microvariability or precession in a binary?

Details Long-term APT photometry of the variable Wolf-Rayet star HD 191765 - LVB-type microvariability or precession in a binary? Long-term APT photometry of the variable Wolf-Rayet star HD 191765 - LVB-type microvariability or precession in a binary?

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105..339m&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 105, no. 1, p. 339-346.

Astronomy and Astrophysics

Astronomy

6

Astronomical Photometry, Eclipsing Binary Stars, Light Curve, Ubv Spectra, Variable Stars, Wolf-Rayet Stars, Massive Stars, Stellar Atmospheres, Stellar Luminosity

Scientific paper

Two years of nearly-daily UBV monitoring of the variable WR star HD 191765 have yielded evidence for a relatively long, 37.2-day period of the light curve in all three filters. In view of the additional 2-day periodicity that emerges from the data, this long period may be interpreted as either (1) luminous, blue-variablelike microvariability, or (2) the precession of the WR component in a close binary system with P of about 2d.

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