KELT-3b: A hot jupiter transiting A v = 9.8 Late-F star

Joshua Pepper, Robert J. Siverd, Thomas G. Beatty, B. Scott Gaudi, Keivan G. Stassun, Jason Eastman, Karen Collins, David W. Latham, Allyson Bieryla, Lars A. Buchhave, Eric L.N. Jensen, Mark Manner, Kaloyan Penev, Justin R. Crepp, Phillip A. Cargile, Saurav Dhital, Michael L. Calkins, Gilbert A. Esquerdo, Perry Berlind, Benjamin J. FultonRachel Street, Bo Ma, Jian Ge, Ji Wang, Qingqing Mao, Alexander J.W. Richert, Andrew Gould, Darren L. Depoy, John F. Kielkopf, Jennifer L. Marshall, Richard W. Pogge, Robert P. Stefanik, Mark Trueblood, Patricia Trueblood

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Abstract

We report the discovery of KELT-3b, a moderately inflated transiting hot Jupiter with a mass of 1.477?0.067+0.066 MJ, radius of 1.345 ± 0.072RJ, and an orbital period of 2.7033904 ± 0.000010 days. The host star, KELT-3, is a V = 9.8 late F star with M* = 1.278+0.063?0.061M, R* = 1.472+0.065?0.067 R *, Teff = 6306+50?49 K, log(g) = 4.209+0.033?0.031, and [Fe/H] = 0.044 +0.080?0.082, and has a likely proper motion companion. KELT-3b is the third transiting exoplanet discovered by the KELT survey, and is orbiting one of the 20 brightest known transiting planet host stars, making it a promising candidate for detailed characterization studies. Although we infer that KELT-3 is significantly evolved, a preliminary analysis of the stellar and orbital evolution of the system suggests that the planet has likely always received a level of incident flux above the empirically identified threshold for radius inflation suggested by Demory and Seager.

Original languageEnglish (US)
Article number64
JournalAstrophysical Journal
Volume773
Issue number1
DOIs
StatePublished - Aug 10 2013

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Pepper, J., Siverd, R. J., Beatty, T. G., Gaudi, B. S., Stassun, K. G., Eastman, J., Collins, K., Latham, D. W., Bieryla, A., Buchhave, L. A., Jensen, E. L. N., Manner, M., Penev, K., Crepp, J. R., Cargile, P. A., Dhital, S., Calkins, M. L., Esquerdo, G. A., Berlind, P., ... Trueblood, P. (2013). KELT-3b: A hot jupiter transiting A v = 9.8 Late-F star. Astrophysical Journal, 773(1), [64]. https://doi.org/10.1088/0004-637X/773/1/64