A Transiting Planet of a Sun-like Star

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dc.creatorMcCullough, P. R.
dc.creatorStys, J. E.
dc.creatorValenti, Jeff A.
dc.creatorJohns-Krull, C. M.
dc.creatorJanes, K. A.
dc.creatorHeasley, J. N.
dc.creatorBye, B. A.
dc.creatorDodd, C.
dc.creatorFleming, S. W.
dc.creatorPinnick, A.
dc.creatorBissinger, R.
dc.creatorGary, B. L.
dc.creatorHowell, P. J.
dc.creatorVanmunster, T.
dc.date2006-05-17
dc.date.accessioned2026-07-07T10:39:01Z
dc.date.available2026-07-07T10:39:01Z
dc.descriptionA planet transits an 11th magnitude, G1V star in the constellation Corona Borealis. We designate the planet XO-1b, and the star, XO-1, also known as GSC 02041-01657. XO-1 lacks a trigonometric distance; we estimate it to be 200+-20 pc. Of the ten stars currently known to host extrasolar transiting planets, the star XO-1 is the most similar to the Sun in its physical characteristics: its radius is 1.0+-0.08 R_Sun, its mass is 1.0+-0.03 M_Sun, V sini < 3 km/s, and its metallicity [Fe/H] is 0.015+-0.04. The orbital period of the planet XO-1b is 3.941534+-0.000027 days, one of the longer ones known. The planetary mass is 0.90+-0.07 M_Jupiter, which is marginally larger than that of other transiting planets with periods between 3 and 4 days. Both the planetary radius and the inclination are functions of the spectroscopically determined stellar radius. If the stellar radius is 1.0+-0.08 R_Sun, then the planetary radius is 1.30+-0.11 R_Jupiter and the inclination of the orbit is 87.7+-1.2 degrees. We have demonstrated a productive international collaboration between professional and amateur astronomers that was important to distinguishing this planet from many other similar candidates.
dc.description31 pages, 9 figures, accepted for part 1 of ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0605414
dc.identifierhttp://arxiv.org/abs/astro-ph/0605414
dc.identifierAstrophys.J.648:1228-1238,2006
dc.identifierdoi:10.1086/505651
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/180887
dc.subjectAstrophysics
dc.titleA Transiting Planet of a Sun-like Star
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