Joint H-alpha and X-ray Observations of Massive X-ray Binaries. I. The B-Supergiant System LS I +65 010 = 2S 0114+650

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dc.creatorGrundstrom, E. D.
dc.creatorBlair, J. L.
dc.creatorGies, D. R.
dc.creatorHuang, W.
dc.creatorMcSwain, M. V.
dc.creatorRaghavan, D.
dc.creatorRiddle, R. L.
dc.creatorSubasavage, J. P.
dc.creatorWingert, D. W.
dc.creatorLevine, A. M.
dc.creatorRemillard, R. A.
dc.date2006-10-30
dc.date.accessioned2026-07-07T10:24:03Z
dc.date.available2026-07-07T10:24:03Z
dc.descriptionWe report on a three year spectroscopic monitoring program of the H-alpha emission in the massive X-ray binary LS I +65 010 = 2S 0114+650, which consists of a B-supergiant and a slowly rotating X-ray pulsar. We present revised orbital elements that yield a period of P=11.5983 +/- 0.0006 d and confirm that the orbit has a non-zero eccentricity e=0.18 +/- 0.05. The H-alpha emission profile is formed in the base of the wind of the B-supergiant primary, and we show how this spectral feature varies on timescales that are probably related to the rotational period of the B-supergiant. We also examine the X-ray fluxes from the Rossi X-ray Timing Explorer All-Sky Monitor instrument, and we show that the X-ray orbital light curve has a maximum at periastron and a minimum at the inferior conjunction of the B-supergiant. We also show that the wind emission strength and the high energy X-ray flux appear to vary in tandem on timescales of approximately a year.
dc.descriptionaccepted to ApJ, 19 pages including 6 figures and 3 tables
dc.identifierhttps://arxiv.org/abs/astro-ph/0610898
dc.identifierhttp://arxiv.org/abs/astro-ph/0610898
dc.identifierAstrophys.J.656:431-436,2007
dc.identifierdoi:10.1086/510508
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176052
dc.subjectAstrophysics
dc.titleJoint H-alpha and X-ray Observations of Massive X-ray Binaries. I. The B-Supergiant System LS I +65 010 = 2S 0114+650
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