The Transit Light Curve Project. I. Four Consecutive Transits of the Exoplanet XO‐1b | Zendy

Matthew J. Holman | Zendy; Joshua N. Winn | Zendy; David W. Latham | Zendy; Francis T. O’Donovan | Zendy; David Charbonneau | Zendy; G. Á. Bakos | Zendy; Gilbert A. Esquerdo | Zendy; C. W. Hergenrother | Zendy; Mark E. Everett | Zendy; András Pál | Zendy

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The Transit Light Curve Project. I. Four Consecutive Transits of the Exoplanet XO‐1b

Author(s) -

Matthew J. Holman,

Joshua N. Winn,

David W. Latham,

Francis T. O’Donovan,

David Charbonneau,

G. Á. Bakos,

Gilbert A. Esquerdo,

C. W. Hergenrother,

Mark E. Everett,

András Pál

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/508155

Subject(s) - exoplanet , physics , transit (satellite) , planet , photometry (optics) , astrophysics , stellar density , radius , light curve , astronomy , planetary system , stellar mass , stars , star formation , public transport , computer security , political science , computer science , law

We present RIz photometry of four consecutive transits of the newlydiscovered exoplanet XO-1b. We improve upon the estimates of the transitparameters, finding the planetary radius to be R_P = 1.184 +0.028/-0.018R_Jupiter and the stellar radius to be R_S = 0.928 +0.018/-0.013 R_Sun,assuming a stellar mass of M_S = 1.00 +/- 0.03 M_Sun. The uncertainties in theplanetary and stellar radii are dominated by the uncertainty in the stellarmass. These uncertainties increase by a factor of 2-3 if a more conservativeuncertainty of 0.10 M_Sun is assumed for the stellar mass. Our estimate of theplanetary radius is smaller than that reported by McCullough et al. (2006) andyields a mean density that is comparable to that of TrES-1 and HD 189733b. Thetimings of the transits have an accuracy ranging from 0.2 to 2.5 minutes, andare marginally consistent with a uniform period.Comment: 22 pages, 5 figures, 2 tables. Accepted for publication in Ap

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