2011
DOI: 10.1088/0004-637x/742/1/59
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HAT-P-32b AND HAT-P-33b: TWO HIGHLY INFLATED HOT JUPITERS TRANSITING HIGH-JITTER STARS

Abstract: We report the discovery of two exoplanets transiting high-jitter stars. HAT-P-32b orbits the bright V=11.289 late-F-early-G dwarf star GSC 3281-00800, with a period P = 2.150008 ± 0.000001 d. The stellar and planetary masses and radii depend on the eccentricity of the system, which is poorly constrained due to the high velocity jitter (∼ 80 m s −1 ). Assuming a circular orbit, the star has a mass of 1.16 ± 0.04 M ⊙ , and radius of 1.22 ± 0.02 R ⊙ , while the planet has a mass of 0.860 ± 0.164 M J , and a radiu… Show more

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Cited by 157 publications
(161 citation statements)
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References 77 publications
(83 reference statements)
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“…However, due to its higher mass, WASP-79b's density is somewhat higher. The main-sequence constrained solution for WASP-79b is, on the other hand, somewhat similar to circular orbit parameters for HAT-P-33b (Hartman et al 2011). The planetary radius and equilibrium temperature are dependant on the inferred stellar radius.…”
Section: Discussionsupporting
confidence: 61%
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“…However, due to its higher mass, WASP-79b's density is somewhat higher. The main-sequence constrained solution for WASP-79b is, on the other hand, somewhat similar to circular orbit parameters for HAT-P-33b (Hartman et al 2011). The planetary radius and equilibrium temperature are dependant on the inferred stellar radius.…”
Section: Discussionsupporting
confidence: 61%
“…5), exceeded only by WASP-33b (Collier Cameron et al 2010), WASP-12b ) and WASP-18b (Hellier et al 2009). The mass, radius and density of WASP-78b, are similar to those of HAT-P-32b (Hartman et al 2011, their circular orbit solution), OGLE-TR-10b (Konacki et al 2005) and TrES-4b (Chan et al 2011). Although, similar in radius, WASP12b is a much denser, more massive planet ).…”
Section: Discussionsupporting
confidence: 54%
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“…8). While Kepler-87 b (ρ 01 = 0.729 ± 0.026) has mass and radius that put it directly in the center of the general distribution of giant planets, Kepler-87 c (ρ 02 = 0.152 ± 0.019) is anomalously low-density for its mass, similar to that of the least dense very hot Jupiters (e.g., Hartman et al 2011). However, the Kepler-87 planets are rarefied although they are neither strongly irradiated nor young.…”
Section: Discussionmentioning
confidence: 99%
“…In this paper we aim to demonstrate on the case of HAT-P-32b that reliable results for a planet's transmission spectrum can be obtained from the ground. The hot Jupiter with a mass of M = 0.860 ± 0.16 M Jup and a radius of R = 1.789 ± 0.025 R Jup was discovered by Hartman et al (2011) around an late-type F dwarf star (Vmag=11.44) at an 2.15 day orbit. The planet's dayside temperature was measured to be T eq = 2042 ± 50 K by Zhao et al (2014) from secondary eclipse observations in the H, K S , 3.6 and 4.5 µm bands.…”
Section: Introductionmentioning
confidence: 99%