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

doi:10.1088/0004-6256/136/5/1901

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 journal › Article › peer-review

15 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 language	English (US)
Pages (from-to)	1901-1905
Number of pages	5
Journal	Astronomical Journal
Volume	136
Issue number	5
DOIs	https://doi.org/10.1088/0004-6256/136/5/1901
State	Published - Nov 1 2008

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-6256/136/5/1901

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title = "Two jupiter-mass planets orbiting HD 154672 and HD 205739",

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.",

author = "Mercedes L{\'o}pez-Morales and Butler, \{R. Paul\} and Fischer, \{Debra A.\} and Dante Minniti and Shectman, \{Stephen A.\} and Genya Takeda and Adams, \{Fred C.\} and Wright, \{Jason T.\} and Pamela Arriagada",

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doi = "10.1088/0004-6256/136/5/1901",

language = "English (US)",

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T1 - Two jupiter-mass planets orbiting HD 154672 and HD 205739

AU - López-Morales, Mercedes

AU - Butler, R. Paul

AU - Fischer, Debra A.

AU - Minniti, Dante

AU - Shectman, Stephen A.

AU - Takeda, Genya

AU - Adams, Fred C.

AU - Wright, Jason T.

AU - Arriagada, Pamela

PY - 2008/11/1

Y1 - 2008/11/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/56449101424

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DO - 10.1088/0004-6256/136/5/1901

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SN - 0004-6256

VL - 136

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EP - 1905

JO - Astronomical Journal

JF - Astronomical Journal

IS - 5

ER -

Two jupiter-mass planets orbiting HD 154672 and HD 205739

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All Science Journal Classification (ASJC) codes

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