HAT-P-28b and HAT-P-29b: Two Sub-Jupiter Mass Transiting Planets

A. Shporer; A. W. Howard; B. Beky; D. A. Fischer; D. D. Sasselov; D. W. Latham; G. A. Bakos; G. A. Esquerdo; G. Furesz; G. Kovacs

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HAT-P-28b and HAT-P-29b: Two Sub-Jupiter Mass Transiting Planets

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arxiv 1103.1813 v2 pith:NKKSCUIS submitted 2011-03-09 astro-ph.EP

L. A. Buchhave , G. A. Bakos , J. D. Hartman , G. Torres , D. W. Latham , J. Andersen , G. Kovacs , R. W. Noyes

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A. Shporer G. A. Esquerdo D. A. Fischer J. A. Johnson G. W. Marcy A. W. Howard B. Beky D. D. Sasselov G. Furesz S. N. Quinn R. P. Stefanik T. Szklenar P. Berlind M. L. Calkins J. Lazar I. Papp P. Sari

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keywords massplanetstransitingcm-3densitydwarfhat-p-28bhat-p-29b

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We present the discovery of two transiting exoplanets. HAT-P-28b orbits a V=13.03 G3 dwarf star with a period P = 3.2572 d and has a mass of 0.63 +- 0.04 MJ and a radius of 1.21 + 0.11 -0.08 RJ yielding a mean density of 0.44 +- 0.09 g cm-3. HAT-P-29b orbits a V=11.90 F8 dwarf star with a period P = 5.7232 d and has a mass of 0.78 +0.08 -0.04 MJ and a radius of 1.11 +0.14 -0.08 RJ yielding a mean density of 0.71 +- 0.18 g cm-3. We discuss the properties of these planets in the context of other known transiting planets.

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