HAT-P-28b and HAT-P-29b: Two Sub-Jupiter Mass Transiting Planets
L. A. Buchhave, G. A. Bakos, J. D. Hartman, G. Torres, D. W. Latham,, J. Andersen, G. Kovacs, R. W. Noyes, 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
TL;DR
This paper reports the discovery and characterization of two sub-Jupiter mass transiting exoplanets, HAT-P-28b and HAT-P-29b, including their orbital and physical properties, contributing to the understanding of such planets.
Contribution
The study presents the first detailed measurements of these two specific transiting exoplanets, expanding the catalog of known sub-Jupiter mass planets.
Findings
HAT-P-28b has a mass of 0.63 MJ and radius of 1.21 RJ.
HAT-P-29b has a mass of 0.78 MJ and radius of 1.11 RJ.
Both planets have low densities, indicating gaseous compositions.
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 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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