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 journalArticlepeer-review

12 Scopus citations

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 (US)
Pages (from-to)1901-1905
Number of pages5
JournalAstronomical Journal
Volume136
Issue number5
DOIs
StatePublished - Nov 1 2008

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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