HAT-P-28b AND HAT-P-29b: TWO SUB-JUPITER MASS TRANSITING PLANETS.

Authors :: BUCHHAVE, L. A.
BAKOS, G. Á.
HARTMAN, J. D.
TORRES, G.
LATHAM, D. W.
ANDERSEN, J.
KOVÁCS, G.
NOYES, R. W.
SHPORER, A.
ESQUERDO, G. A.
FISCHER, D. A.
JOHNSON, J. A.
MARCY, G. W.
HOWARD, A. W.
B. BÉKY
SASSELOV, D. D.
FÜRÉSZ, G.
QUINN, S. N.
STEFANIK, R. P.
SZKLENÁR, T.
Source :: Astrophysical Journal; Jun2011, Vol. 733 Issue 2, p1-10, 10p
Publication Year :: 2011
Abstract: 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 days and has a mass of 0.63 ± 0.04 M<subscript>J</subscript> and a radius of 1.21<superscript>+0.11</superscript> R<subscript>J</subscript> yielding a mean density of 0.44 ± 0.09 g cm<superscript>-3</superscript>. HAT-P-29b orbits a V = 11.90 F8 dwarf star with a period P = 5.7232 days and has a mass of 0.78<superscript>+0.08</superscript><subscript>-0.04</subscript> M<subscript>J</subscript> and a radius of 1.1<superscript>+0.14</superscript><subscript>-0.08</subscript> R<subscript>J</subscript> yielding a mean density of 0.71 ± 0.18 g cm<superscript>-3</superscript>. We discuss the properties of these planets in the context of other known transiting planets. [ABSTRACT FROM AUTHOR]