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THE NASA-UC ETA-EAR...
THE NASA-UC ETA-EARTH PROGRAM. III. A SUPER-EARTH ORBITING HD 97658 AND A NEPTUNE-MASS PLANET ORBITING G1 785
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Howard, Andrew W. (author)
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Johnson, John Asher (author)
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Marcy, Geoffrey W. (author)
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Fischer, Debra A. (author)
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Wright, Jason T. (author)
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Henry, Gregory W. (author)
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Isaacson, Howard (author)
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Valenti, Jeff A. (author)
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Anderson, Jay (author)
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- Piskunov, Nikolai (author)
- Uppsala universitet,Observationell astrofysik
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(creator_code:org_t)
- 2011
- 2011
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 730:1, s. 10-
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- We report the discovery of planets orbiting two bright, nearby early K dwarf stars, HD 97658 and G1 785. These planets were detected by Keplerian modeling of radial velocities measured with Keck-HIRES for the NASA-UC Eta-Earth Survey. HD 97658 b is a close-in super-Earth with minimum mass M sin i = 8.2 +/- 1.2 M-circle plus, orbital period P = 9.494 +/- 0.005 days, and an orbit that is consistent with circular. G1 785 b is a Neptune-mass planet with M sin i = 21.6 +/- 2.0 M-circle plus, P = 74.39 +/- 0.12 days, and orbital eccentricity e = 0.30 +/- 0.09. Photometric observations with the T12 0.8 m automatic photometric telescope at Fairborn Observatory show that HD 97658 is photometrically constant at the radial velocity period to 0.09 mmag, supporting the existence of the planet.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- planetary systems
- stars: individual (HD 97658
- G1 785)
- techniques: radial velocities
- Physics
- Fysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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Howard, Andrew W ...
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Johnson, John As ...
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Marcy, Geoffrey ...
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Fischer, Debra A ...
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Wright, Jason T.
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Henry, Gregory W ...
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show more...
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Isaacson, Howard
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Valenti, Jeff A.
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Anderson, Jay
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Piskunov, Nikola ...
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show less...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Uppsala University