An eccentric hot jupiter orbiting the subgiant HD 185269

John Asher Johnson; Geoffrey W. Marcy; Debra A. Fischer; Gregory W. Henry; Jason T. Wright; Howard Isaacson; Chris McCarthy

doi:10.1086/508255

An eccentric hot jupiter orbiting the subgiant HD 185269

John Asher Johnson, Geoffrey W. Marcy, Debra A. Fischer, Gregory W. Henry, Jason T. Wright, Howard Isaacson, Chris McCarthy

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95 Scopus citations

Abstract

We report the detection of a Jupiter-mass planet in a 6.838 day orbit around the 1.28 M_⊙ subgiant HD 185269. The eccentricity of HD 185269b (e = 0.30) is unusually large compared to other planets within 0.1 AU of their stars. Photometric observations demonstrate that the star is constant to ±0.0001 mag on the radial velocity period, strengthening our interpretation of a planetary companion. This planet was detected as part of our radial velocity survey of evolved stars located on the subgiant branch of the H-R diagram-also known as the Hertzsprung gap. These stars, which have masses between 1.2 and 2.5 M_⊙ play an important role in the investigation of the frequency of extrasolar planets as a function of stellar mass.

Original language	English (US)
Pages (from-to)	1724-1728
Number of pages	5
Journal	Astrophysical Journal
Volume	652
Issue number	2 I
DOIs	https://doi.org/10.1086/508255
State	Published - Dec 1 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/508255

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title = "An eccentric hot jupiter orbiting the subgiant HD 185269",

abstract = "We report the detection of a Jupiter-mass planet in a 6.838 day orbit around the 1.28 M⊙ subgiant HD 185269. The eccentricity of HD 185269b (e = 0.30) is unusually large compared to other planets within 0.1 AU of their stars. Photometric observations demonstrate that the star is constant to ±0.0001 mag on the radial velocity period, strengthening our interpretation of a planetary companion. This planet was detected as part of our radial velocity survey of evolved stars located on the subgiant branch of the H-R diagram-also known as the Hertzsprung gap. These stars, which have masses between 1.2 and 2.5 M⊙ play an important role in the investigation of the frequency of extrasolar planets as a function of stellar mass.",

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T1 - An eccentric hot jupiter orbiting the subgiant HD 185269

AU - Johnson, John Asher

AU - Marcy, Geoffrey W.

AU - Fischer, Debra A.

AU - Henry, Gregory W.

AU - Wright, Jason T.

AU - Isaacson, Howard

AU - McCarthy, Chris

PY - 2006/12/1

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AB - We report the detection of a Jupiter-mass planet in a 6.838 day orbit around the 1.28 M⊙ subgiant HD 185269. The eccentricity of HD 185269b (e = 0.30) is unusually large compared to other planets within 0.1 AU of their stars. Photometric observations demonstrate that the star is constant to ±0.0001 mag on the radial velocity period, strengthening our interpretation of a planetary companion. This planet was detected as part of our radial velocity survey of evolved stars located on the subgiant branch of the H-R diagram-also known as the Hertzsprung gap. These stars, which have masses between 1.2 and 2.5 M⊙ play an important role in the investigation of the frequency of extrasolar planets as a function of stellar mass.

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An eccentric hot jupiter orbiting the subgiant HD 185269

Abstract

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