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The HARPS search for southern extra-solar planets XXIX. Four new planets in orbit around the moderatly active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849

Title
The HARPS search for southern extra-solar planets XXIX. Four new planets in orbit around the moderatly active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849
Type
Article in International Scientific Journal
Year
2011
Authors
Segransan, D
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Mayor, M
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Udry, S
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Lovis, C
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Benz, W
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Bouchy, F
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Lo Curto, G
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Mordasini, C
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Moutou, C
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Naef, D
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Pepe, F
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Queloz, D
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N.C. Santos
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Journal
Vol. 535
Final page: A54
ISSN: 0004-6361
Publisher: EDP Sciences
Other information
Authenticus ID: P-002-JTG
Abstract (EN): We report the detection of four new extrasolar planets in orbit around the moderately active stars HD 63765, HD 104067, HIP 70849, and HD 125595 with the HARPS Echelle spectrograph mounted on the ESO 3.6-m telescope at La Silla. The first planet, HD 63765 b, has a minimum mass of 0.64 M-Jup, a period of 358 days, and an eccentricity of 0.24. It orbits a G9 dwarf at 0.94 AU. The second planet, HD 104067 b, is a 3.6 Neptune-mass-planet with a 55.8-day-period. It orbits its parent K2 dwarf, in a circular orbit with a semi-major axis of a = 0.26 AU. Radial velocity measurements present a approximate to 500-day-oscillation that reveals significant magnetic cycles. The third planet is a 0.77 Neptune-mass-planet in circular orbit around the K4 dwarf, HD 12595, with a 9.67-day-period. Finally, HIP 7849 b is a long-period (5 < P < 75 years) and massive planet of msin i approximate to 3.5- 15 M-Jup that orbits a late K7 dwarf.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 8
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