On the nature of the single eclipse per 80d orbit of the H-rich luminous WN star WR22
Guillaume Lenoir-Craig,
Igor I. Antokhin,
Eleonora A. Antokhina
et al.
Abstract:WR22 = HD 92740 is a bright (V = 6.4), intrinsically luminous, double-line WN7h + O9III-V binary exhibiting one sharp 8% deep eclipse near periastron in its elliptical (e = 0.6) 80-day orbit, when the WR-star passes in front of the O star, with no secondary eclipse. We apply two models (L96, A13) to probe the optical space-based light curves from BRITE-Constellation, including three separate, complete eclipses, that show increased (o-c) scatter compared to the rest of the observations outside the eclipses, lik… Show more
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