An eccentric hot jupiter orbiting the subgiant HD 185269

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

Research output: Contribution to journalArticle

77 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)1724-1728
Number of pages5
JournalAstrophysical Journal
Volume652
Issue number2 I
DOIs
StatePublished - Dec 1 2006

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All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Johnson, J. A., Marcy, G. W., Fischer, D. A., Henry, G. W., Wright, J., Isaacson, H., & McCarthy, C. (2006). An eccentric hot jupiter orbiting the subgiant HD 185269. Astrophysical Journal, 652(2 I), 1724-1728. https://doi.org/10.1086/508255
Johnson, John Asher ; Marcy, Geoffrey W. ; Fischer, Debra A. ; Henry, Gregory W. ; Wright, Jason ; Isaacson, Howard ; McCarthy, Chris. / An eccentric hot jupiter orbiting the subgiant HD 185269. In: Astrophysical Journal. 2006 ; Vol. 652, No. 2 I. pp. 1724-1728.
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Johnson, JA, Marcy, GW, Fischer, DA, Henry, GW, Wright, J, Isaacson, H & McCarthy, C 2006, 'An eccentric hot jupiter orbiting the subgiant HD 185269', Astrophysical Journal, vol. 652, no. 2 I, pp. 1724-1728. https://doi.org/10.1086/508255

An eccentric hot jupiter orbiting the subgiant HD 185269. / Johnson, John Asher; Marcy, Geoffrey W.; Fischer, Debra A.; Henry, Gregory W.; Wright, Jason; Isaacson, Howard; McCarthy, Chris.

In: Astrophysical Journal, Vol. 652, No. 2 I, 01.12.2006, p. 1724-1728.

Research output: Contribution to journalArticle

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Johnson JA, Marcy GW, Fischer DA, Henry GW, Wright J, Isaacson H et al. An eccentric hot jupiter orbiting the subgiant HD 185269. Astrophysical Journal. 2006 Dec 1;652(2 I):1724-1728. https://doi.org/10.1086/508255