A Transiting Planet of a Sun‐like Star | Zendy

P. R. McCullough | Zendy; J. E. Stys | Zendy; Jeff A. Valenti | Zendy; Christopher M. JohnsKrull | Zendy; K. A. Janes | Zendy; J. N. Heasley | Zendy; B. A. Bye | Zendy; C. A. F. Dodd | Zendy; Scott W. Fleming | Zendy; A. Pinnick | Zendy; R. Bissinger | Zendy; B. L. Gary | Zendy; P. J. Howell | Zendy; T. Vanmunster | Zendy

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A Transiting Planet of a Sun‐like Star

Author(s) -

P. R. McCullough,

J. E. Stys,

Jeff A. Valenti,

Christopher M. JohnsKrull,

K. A. Janes,

J. N. Heasley,

B. A. Bye,

C. A. F. Dodd,

Scott W. Fleming,

A. Pinnick,

R. Bissinger,

B. L. Gary,

P. J. Howell,

T. Vanmunster

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 - 10.1086/505651

Subject(s) - physics , planet , exoplanet , astrophysics , radius , astronomy , earth radius , planetary system , kepler 69c , star (game theory) , orbital period , metallicity , stars , magnetosphere , computer security , quantum mechanics , computer science , plasma

A planet transits an 11th magnitude, G1V star in the constellation CoronaBorealis. We designate the planet XO-1b, and the star, XO-1, also known as GSC02041-01657. XO-1 lacks a trigonometric distance; we estimate it to be 200+-20pc. Of the ten stars currently known to host extrasolar transiting planets, thestar XO-1 is the most similar to the Sun in its physical characteristics: itsradius is 1.0+-0.08 R_Sun, its mass is 1.0+-0.03 M_Sun, V sini < 3 km/s, andits metallicity [Fe/H] is 0.015+-0.04. The orbital period of the planet XO-1bis 3.941534+-0.000027 days, one of the longer ones known. The planetary mass is0.90+-0.07 M_Jupiter, which is marginally larger than that of other transitingplanets with periods between 3 and 4 days. Both the planetary radius and theinclination are functions of the spectroscopically determined stellar radius.If the stellar radius is 1.0+-0.08 R_Sun, then the planetary radius is1.30+-0.11 R_Jupiter and the inclination of the orbit is 87.7+-1.2 degrees. Wehave demonstrated a productive international collaboration between professionaland amateur astronomers that was important to distinguishing this planet frommany other similar candidates.Comment: 31 pages, 9 figures, accepted for part 1 of Ap

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