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arXiv · 0809.1037

Two Jupiter-Mass Planets Orbiting HD 154672 and HD 205739

Mercedes Lopez-Morales·R. Paul Butler·Debra A. Fischer·Dante Minniti·Stephen A. Shectman·Genya Takeda·Fred C. Adams·Jason T. Wright·Pamela Arriagada
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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 M sin i = 4.96 M_Jup and is orbiting the G3 IV star HD154672 with an orbital period of 163.9 days. The second planet is orbiting the F7 V star HD205739 with an orbital period of 279.8 days and has a mass of M sin 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 HD205739b shows a trend of 0.0649 m/s/day, suggesting the presence of an additional outer body in that system.

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Mercedes Lopez-Morales, R. Paul Butler, Debra A. Fischer, Dante Minniti, Stephen A. Shectman, Genya Takeda, Fred C. Adams, Jason T. Wright, Pamela Arriagada. 2008-09-05. Two Jupiter-Mass Planets Orbiting HD 154672 and HD 205739. https://doi.org/10.1088/0004-6256%2F136%2F5%2F1901

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