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.
@article{arxiv.1103.1813,
title = {HAT-P-28b and HAT-P-29b: Two Sub-Jupiter Mass Transiting Planets},
author = {L. A. Buchhave and G. A. Bakos and J. D. Hartman and G. Torres and D. W. Latham and J. Andersen and G. Kovacs and R. W. Noyes and A. Shporer and G. A. Esquerdo and D. A. Fischer and J. A. Johnson and G. W. Marcy and A. W. Howard and B. Beky and D. D. Sasselov and G. Furesz and S. N. Quinn and R. P. Stefanik and T. Szklenar and P. Berlind and M. L. Calkins and J. Lazar and I. Papp and P. Sari},
journal= {arXiv preprint arXiv:1103.1813},
year = {2015}
}
Comments
10 pages, 9 figures, submitted to ApJ on 17 January, 2011, accepted 24 March, 2011