G
Geoffrey W. Marcy
Researcher at University of California, Berkeley
Publications - 555
Citations - 88813
Geoffrey W. Marcy is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Planet & Exoplanet. The author has an hindex of 83, co-authored 550 publications receiving 82309 citations. Previous affiliations of Geoffrey W. Marcy include University of California, Santa Barbara & San Francisco State University.
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Journal ArticleDOI
The frequency of low-mass exoplanets
Simon J. O'Toole,Hugh R. A. Jones,C. G. Tinney,R. P. Butler,Geoffrey W. Marcy,Geoffrey W. Marcy,Brad D. Carter,Jeremy Bailey,Robert A. Wittenmyer +8 more
TL;DR: In this paper, the first results from the Anglo-Australian Telescope Rocky Planet Search (AAS) were reported, which targeted 24 bright, nearby and intrinsically stable Sun-like stars selected from the AAS main sample.
Journal ArticleDOI
A hot jupiter orbiting the 1.7 m⊙ subgiant hd 102956
John Asher Johnson,John Asher Johnson,Brendan P. Bowler,Andrew W. Howard,Gregory W. Henry,Geoffrey W. Marcy,Howard Isaacson,John M. Brewer,Debra A. Fischer,Timothy D. Morton,Timothy D. Morton,Justin R. Crepp,Justin R. Crepp +12 more
TL;DR: In this paper, the authors reported the detection of a giant planet in a 6.4950 day orbit around the 1.68 M ⊙ subgiant HD 102956.
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Spin-Orbit Alignment for the Circumbinary Planet Host Kepler-16 A
Joshua N. Winn,Simon Albrecht,John Asher Johnson,John Asher Johnson,Guillermo Torres,William D. Cochran,Geoffrey W. Marcy,Andrew W. Howard,Howard Isaacson,Debra A. Fischer,Laurance R. Doyle,William F. Welsh,Joshua A. Carter,Daniel C. Fabrycky,Darin Ragozzine,Samuel N. Quinn,Avi Shporer,Steve B. Howell,David W. Latham,Jerome A. Orosz,Andrej Prsa,Robert W. Slawson,William J. Borucki,David G. Koch,Thomas Barclay,Alan P. Boss,Jørgen Christensen-Dalsgaard,Forrest R. Girouard,Jon M. Jenkins,Jon M. Jenkins,Todd C. Klaus,Søren Meibom,Robert L. Morris,Robert L. Morris,Dimitar Sasselov,Martin Still,Jeffrey Van Cleve,Jeffrey Van Cleve +37 more
TL;DR: In this article, the angular momentum of the primary star was investigated based on Kepler photometry and Keck spectroscopy, and it was shown that the three largest sources of angular momentum (the stellar orbit, the planetary orbit, and the primary's rotation) are all closely aligned.
Journal ArticleDOI
The Rotation of M Dwarfs
Geoffrey W. Marcy,Grace H. Chen +1 more
TL;DR: In this article, rotational broadening of absorption lines in a sample of 47 nearby, late K- and M-type main-sequence stars is measured from four lines by fitting them with artificially broadened lines from an extremely slowly rotating reference star of similar spectral type.
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A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes
John Asher Johnson,Joshua N. Winn,Simon Albrecht,Andrew W. Howard,Geoffrey W. Marcy,J. Zachary Gazak +5 more
TL;DR: In this paper, the authors present evidence that the WASP-14 exoplanetary system has misaligned orbital and stellar-rotational axes, with an angle lambda = 33.1 +/- 7.4 deg between their sky projections.