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

Journal Article · Wed Jun 01 00:00:00 EDT 2011 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/733/2/116· OSTI ID:21576707

Buchhave, L A; Bakos, G A; Hartman, J D; Torres, G; Latham, D W; Noyes, R W; Esquerdo, G A; Beky, B; Sasselov, D D; Furesz, G; Quinn, S N; Stefanik, R P; Szklenar, T ^[1]; Andersen, J ^[2]; Kovacs, G ^[3]; Shporer, A ^[4]; Fischer, D A ^[5]; Johnson, J A ^[6]; Marcy, G W; Howard, A W ^[7]

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1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
2. Niels Bohr Institute, Copenhagen University (Denmark)
3. Konkoly Observatory, Budapest (Hungary)
4. Las Cumbres Observatory Global Telescope Network, Goleta, CA (United States)
5. Department of Astronomy, Yale University, New Haven, CT (United States)
6. Department of Astrophysics, California Institute of Technology, Pasadena, CA (United States)
7. Department of Astronomy, University of California, Berkeley, CA (United States)

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{sub J} and a radius of 1.21{sup +0.11}{sub -0.08} R{sub J} yielding a mean density of 0.44 {+-} 0.09 g cm{sup -3}. 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{sup +0.08}{sub -0.04} M{sub J} and a radius of 1.11{sup +0.14}{sub -0.08} R{sub J} yielding a mean density of 0.71 {+-} 0.18 g cm{sup -3}. We discuss the properties of these planets in the context of other known transiting planets.

• OSTI ID: 21576707
• Journal Information: Astrophysical Journal, Vol. 733, Issue 2; Other Information: DOI: 10.1088/0004-637X/733/2/116; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DENSITY
DWARF STARS
MASS
ORBITS
PLANETS
PHYSICAL PROPERTIES
STARS