K
K. H. Cook
Researcher at Lawrence Livermore National Laboratory
Publications - 192
Citations - 10333
K. H. Cook is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Gravitational microlensing & Stars. The author has an hindex of 48, co-authored 191 publications receiving 9961 citations. Previous affiliations of K. H. Cook include Association of Universities for Research in Astronomy & Institut d'Astrophysique de Paris.
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Journal ArticleDOI
The MACHO Project: Microlensing Results from 5.7 Years of LMC Observations
Charles Alcock,R. A. Allsman,David R. Alves,T. S. Axelrod,A. C. Becker,David P. Bennett,K. H. Cook,Neal Dalal,Andrew J. Drake,Kenneth C. Freeman,Marla Geha,Kim Griest,Matthew J. Lehner,S. L. Marshall,Dante Minniti,C. A. Nelson,Bruce A. Peterson,P. Popowski,Mark Pratt,Peter J. Quinn,Christopher W. Stubbs,William J. Sutherland,A. B. Tomaney,T. Vandehei,D. L. Welch +24 more
TL;DR: In this article, an analysis of 5.7 years of photometry on 11.9 million stars in the Large Magellanic Cloud (LMC) reveals 13 - 17 microlensing events.
Journal ArticleDOI
Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing
J. P. Beaulieu,David P. Bennett,Pascal Fouqué,Andrew Williams,Martin Dominik,U. G. Jørgensen,D. Kubas,Arnaud Cassan,C. Coutures,J. G. Greenhill,K. M. Hill,J. W. Menzies,Penny D. Sackett,Michael D. Albrow,S. Brillant,J. A. R. Caldwell,J. J. Calitz,K. H. Cook,E. Corrales,M. Desort,S. Dieters,D. Dominis,J. Donatowicz,M. Hoffman,Stephen R. Kane,J. B. Marquette,R. M. Martin,P. J. Meintjes,K. R. Pollard,Kailash C. Sahu,C. Vinter,Joachim Wambsganss,K. Woller,Keith Horne,Iain A. Steele,D. M. Bramich,D. M. Bramich,Martin Burgdorf,Colin Snodgrass,M. F. Bode,Andrzej Udalski,Michał K. Szymański,M. Kubiak,T. Wiȩckowski,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,Łukasz Wyrzykowski,Bohdan Paczynski,Fumio Abe,Ian A. Bond,T. R. Britton,T. R. Britton,A. C. Gilmore,John B. Hearnshaw,Yoshitaka Itow,Kisaku Kamiya,P. M. Kilmartin,A. V. Korpela,Kimiaki Masuda,Yutaka Matsubara,M. Motomura,Yasushi Muraki,Shota Nakamura,C. Okada,Kouji Ohnishi,Nicholas J. Rattenbury,Takashi Sako,Susumu Sato,Misao Sasaki,T. Sekiguchi,Denis J. Sullivan,P. J. Tristram,Philip Yock,T. Yoshioka +74 more
TL;DR: The detection of a cool, sub-Neptune-mass planets may be more common than gas giant planets, as predicted by the core accretion theory, and is suggested to name OGLE-2005-BLG-390Lb, indicating a planetary mass companion to the lens star of the microlensing event.
Journal ArticleDOI
One or more bound planets per Milky Way star from microlensing observations
Arnaud Cassan,Arnaud Cassan,D. Kubas,D. Kubas,J. P. Beaulieu,J. P. Beaulieu,Martin Dominik,Martin Dominik,Keith Horne,Keith Horne,J. G. Greenhill,J. G. Greenhill,Joachim Wambsganss,Joachim Wambsganss,J. W. Menzies,Andrew Williams,U. G. Jørgensen,U. G. Jørgensen,Andrzej Udalski,David P. Bennett,David P. Bennett,Michael D. Albrow,Michael D. Albrow,V. Batista,S. Brillant,S. Brillant,J. A. R. Caldwell,J. A. R. Caldwell,Andrew A. Cole,Andrew A. Cole,Ch. Coutures,K. H. Cook,K. H. Cook,S. Dieters,S. Dieters,D. Dominis Prester,D. Dominis Prester,J. Donatowicz,J. Donatowicz,Pascal Fouqué,Pascal Fouqué,K. Hill,K. Hill,N. Kains,N. Kains,Stephen R. Kane,Stephen R. Kane,J. B. Marquette,R. Martin,K. R. Pollard,K. R. Pollard,Kailash C. Sahu,Kailash C. Sahu,C. Vinter,C. Vinter,D. Warren,D. Warren,B. Watson,B. Watson,M. Zub,M. Zub,Takahiro Sumi,Michał K. Szymański,M. Kubiak,Radosław Poleski,Igor Soszyński,Krzysztof Ulaczyk,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Łukasz Wyrzykowski,Łukasz Wyrzykowski +70 more
TL;DR: It is concluded that stars are orbited by planets as a rule, rather than the exception, and that of stars host Jupiter-mass planets 0.5–10 au (Sun–Earth distance) from their stars.
Journal ArticleDOI
The MACHO Project LMC Microlensing Results from the First Two Years and the Nature of the Galactic Dark Halo
Charles Alcock,R. A. Allsman,David R. Alves,T. S. Axelrod,A. C. Becker,David P. Bennett,K. H. Cook,Kenneth C. Freeman,Kim Griest,J. A. Guern,Matthew J. Lehner,S. L. Marshall,Bruce A. Peterson,Mark Pratt,Peter J. Quinn,A. W. Rodgers,Christopher W. Stubbs,William J. Sutherland,D. L. Welch +18 more
TL;DR: In this article, the authors used the first 2.1 years of photometry of 8.5 million stars in the LMC to estimate the total microlensing optical depth towards the Large Magellanic Cloud (LMC) from events with $2 < that < 200$ days.
Journal ArticleDOI
Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing
B. S. Gaudi,David P. Bennett,Andrzej Udalski,Andrew Gould,G. W. Christie,D. Maoz,Subo Dong,Jennie McCormick,Michał K. Szymański,P. J. Tristram,S. Nikolaev,Bohdan Paczynski,M. Kubiak,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,Krzysztof Ulaczyk,Łukasz Wyrzykowski,Łukasz Wyrzykowski,Darren L. DePoy,C. Han,Shai Kaspi,C.-U. Lee,F. Mallia,Tim Natusch,Richard W. Pogge,Byeong-Gon Park,Fumio Abe,Ian A. Bond,C. S. Botzler,Akihiko Fukui,John B. Hearnshaw,Yoshitaka Itow,Kisaku Kamiya,A. V. Korpela,P. M. Kilmartin,W. Lin,Kimiaki Masuda,Yutaka Matsubara,M. Motomura,Yasushi Muraki,Shota Nakamura,Teppei Okumura,Kouji Ohnishi,Nicholas J. Rattenbury,Takashi Sako,To. Saito,Shuji Sato,L. Skuljan,Denis J. Sullivan,Takahiro Sumi,Winston L. Sweatman,Philip Yock,Michael D. Albrow,Alasdair Allan,J.-P. Beaulieu,Martin Burgdorf,K. H. Cook,C. Coutures,Martin Dominik,S. Dieters,Pascal Fouqué,J. G. Greenhill,Keith Horne,Iain A. Steele,Yiannis Tsapras,Brian Chaboyer,A. Crocker,Stephan Frank,Bruce Macintosh +70 more
TL;DR: Two planets with masses that could not have been detected with other techniques are identified; their discovery from only six confirmed microlensing planet detections suggests that solar system analogs may be common.