Two jupiter-mass planets orbiting HD 154672 and HD 205739

Mercedes López-Morales, R. Paul Butler, Debra A. Fischer, Dante Minniti, Stephen A. Shectman, Genya Takeda, Fred C. Adams, Jason T. Wright, Pamela Arriagada

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We report the detection of the first two planets from the N2K Doppler planet search program at the Magellan telescopes. The first planet has a mass of Msin i = 4.96 M Jup and orbits the G3 IV star HD 154672 with an orbital period of 163.9 days. The second planet orbits the F7 V star HD 205739 with an orbital period of 279.8 days and has a mass of Msin i = 1.37 M Jup. Both planets are in eccentric orbits, with eccentricities e = 0.61 and e = 0.27, respectively. Both stars are metal rich and appear to be chromospherically inactive, based on inspection of their Ca II H and K lines. Finally, the best Keplerian model fit to HD 205739b shows a trend of 0.0649 m s-1 day-1, suggesting the presence of an additional outer body in that system.

Original languageEnglish
Pages (from-to)1901-1905
Number of pages5
JournalAstronomical Journal
Volume136
Issue number5
DOIs
Publication statusPublished - 1 Nov 2008

Keywords

  • Planetary systems
  • Stars: individual (HD 154672, HD205739)
  • Techniques: radial velocities

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    López-Morales, M., Butler, R. P., Fischer, D. A., Minniti, D., Shectman, S. A., Takeda, G., Adams, F. C., Wright, J. T., & Arriagada, P. (2008). Two jupiter-mass planets orbiting HD 154672 and HD 205739. Astronomical Journal, 136(5), 1901-1905. https://doi.org/10.1088/0004-6256/136/5/1901