Y
Y. C. Perrott
Researcher at University of Auckland
Publications - 46
Citations - 4461
Y. C. Perrott is an academic researcher from University of Auckland. The author has contributed to research in topics: Gravitational microlensing & Light curve. The author has an hindex of 27, co-authored 42 publications receiving 4259 citations.
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Journal ArticleDOI
Unbound or distant planetary mass population detected by gravitational microlensing
Takahiro Sumi,Kisaku Kamiya,David P. Bennett,Ian A. Bond,Fumio Abe,C. S. Botzler,Akihiko Fukui,K. Furusawa,John B. Hearnshaw,Yoshitaka Itow,P. M. Kilmartin,A. V. Korpela,W. Lin,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,M. Motomura,Yasushi Muraki,M. Nagaya,Shota Nakamura,Kouji Ohnishi,Teppei Okumura,Y. C. Perrott,Nicholas J. Rattenbury,To. Saito,T. K. Sako,Denis J. Sullivan,Winston L. Sweatman,P. J. Tristram,P. C. M. Yock,Andrzej Udalski,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,Radosław Poleski,Igor Soszyński,Łukasz Wyrzykowski,K. Ulaczyk +38 more
TL;DR: The discovery of a population of unbound or distant Jupiter-mass objects is reported, which are almost twice as common as main-sequence stars, based on two years of gravitational microlensing survey observations towards the Galactic Bulge.
Journal ArticleDOI
Frequency of solar-like systems and of ice and gas giants beyond the snow line from high-magnification microlensing events in 2005-2008
Andrew Gould,Subo Dong,B. S. Gaudi,Andrzej Udalski,Ian A. Bond,J. G. Greenhill,Rachel Street,Martin Dominik,Takahiro Sumi,Michał K. Szymański,C. Han,William H. Allen,Greg Bolt,M. Bos,G. W. Christie,Darren L. DePoy,Jack D. Drummond,Jason D. Eastman,Avishay Gal-Yam,D. Higgins,J. Janczak,Shai Kaspi,Szymon Kozłowski,C.-U. Lee,F. Mallia,Anaëlle Maury,D. Maoz,Jennie McCormick,L. A. G. Monard,D. Moorhouse,N. D. Morgan,Tim Natusch,Eran O. Ofek,Byeong-Gon Park,Richard W. Pogge,David Polishook,R. Santallo,Avi Shporer,O. Spector,G. Thornley,Jennifer C. Yee,M. Kubiak,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,Łukasz Wyrzykowski,Krzysztof Ulaczyk,Radosław Poleski,Fumio Abe,David P. Bennett,C. S. Botzler,D. Douchin,M. Freeman,Akihiko Fukui,K. Furusawa,John B. Hearnshaw,S. Hosaka,Yoshitaka Itow,K. Kamiya,P. M. Kilmartin,A. Korpela,W. Lin,C. H. Ling,S. Makita,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,Yasushi Muraki,M. Nagaya,K. Nishimoto,Kouji Ohnishi,Teppei Okumura,Y. C. Perrott,L. Philpott,Nicholas J. Rattenbury,To. Saito,Takashi Sako,Denis J. Sullivan,W. L. Sweatman,P. J. Tristram,E. von Seggern,P. C. M. Yock,Michael D. Albrow,V. Batista,J. P. Beaulieu,S. Brillant,J. Caldwell,J. J. Calitz,Arnaud Cassan,Andrew A. Cole,K. W. Cook,C. Coutures,S. Dieters,D. Dominis Prester,J. Donatowicz,Pascal Fouqué,K. Hill,M. Hoffman,Francisco Jablonski,Stephen R. Kane,N. Kains,D. Kubas,J.-B. Marquette,R. M. Martin,Eder Martioli,P. J. Meintjes,J. Menzies,Ettore Pedretti,K. R. Pollard,K. C. Sahu,C. Vinter,J. Wambsganss,R. A. Watson,Andrew Williams,M. Zub,Alasdair Allan,M. F. Bode,D. M. Bramich,Martin Burgdorf,N. Clay,S. Fraser,E. Hawkins,Keith Horne,E. Kerins,T. A. Lister,C. Mottram,E. S. Saunders,Colin Snodgrass,Iain A. Steele,Yiannis Tsapras,U. G. Jørgensen,Timo Anguita,Valerio Bozza,S. Calchi Novati,K. Harpsøe,Tobias C. Hinse,M. Hundertmark,P. Kjærgaard,C. Liebig,C. Liebig,Luigi Mancini,G. Masi,M. Mathiasen,Sohrab Rahvar,Davide Ricci,Gaetano Scarpetta,John Southworth,Jean Surdej,Christina C. Thöne,Christina C. Thöne +149 more
TL;DR: In this paper, the authors presented the first measurement of the planet frequency beyond the "snow line," for the planet-to-star mass-ratio interval during 2005-2008 microlensing events during the survey-plus-follow-up high-magnification channel.
Journal ArticleDOI
A Low-Mass Planet with a Possible Sub-Stellar-Mass Host in Microlensing Event MOA-2007-BLG-192
David P. Bennett,Ian A. Bond,Andrzej Udalski,Takahiro Sumi,Fumio Abe,Akihiko Fukui,K. Furusawa,John B. Hearnshaw,S. Holderness,Yoshitaka Itow,Kisaku Kamiya,A. V. Korpela,P. M. Kilmartin,W. Lin,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,Yasushi Muraki,M. Nagaya,Teppei Okumura,Kouji Ohnishi,Y. C. Perrott,Nicholas J. Rattenbury,Takashi Sako,To. Saito,Susumu Sato,L. Skuljan,Denis J. Sullivan,Winston L. Sweatman,P. J. Tristram,Philip Yock,M. Kubiak,Michał K. Szymański,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,O. Szewczyk,Łukasz Wyrzykowski,Łukasz Wyrzykowski,Krzysztof Ulaczyk,V. Batista,J. P. Beaulieu,S. Brillant,Arnaud Cassan,P. Fouque,Pierre Kervella,D. Kubas,J. B. Marquette +49 more
TL;DR: In this paper, the authors reported the detection of an extrasolar planet of mass ratio q~2×10-4 in microlensing event MOA-2007-BLG-192.
Journal ArticleDOI
A COLD NEPTUNE-MASS PLANET OGLE-2007-BLG-368Lb: COLD NEPTUNES ARE COMMON
Takahiro Sumi,D. P. Bennett,Ian A. Bond,Andrzej Udalski,V. Batista,Martin Dominik,Martin Dominik,P. Fouqué,D. Kubas,Andrew Gould,Bruce Macintosh,K. H. Cook,Subo Dong,L. Skuljan,Arnaud Cassan,Fumio Abe,C. S. Botzler,Akihiko Fukui,K. Furusawa,John B. Hearnshaw,Yoshitaka Itow,Kisaku Kamiya,P. M. Kilmartin,A. V. Korpela,W. Lin,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,Yasushi Muraki,M. Nagaya,Takahiro Nagayama,Kouji Ohnishi,Teppei Okumura,Y. C. Perrott,Nicholas J. Rattenbury,To. Saito,Takashi Sako,D. J. Sullivan,Winston L. Sweatman,P. J. Tristram,Philip Yock,J. P. Beaulieu,Andrew A. Cole,Ch. Coutures,M. F. Duran,J. G. Greenhill,Francisco Jablonski,U. Marboeuf,Eder Martioli,Ettore Pedretti,Ondřej Pejcha,Patricio Rojo,Michael D. Albrow,S. Brillant,M. F. Bode,D. M. Bramich,Martin Burgdorf,Martin Burgdorf,J. A. R. Caldwell,H. Calitz,E. Corrales,S. Dieters,S. Dieters,D. Dominis Prester,J. Donatowicz,K. M. Hill,K. M. Hill,M. Hoffman,Keith Horne,U. G. Jørgensen,N. Kains,Stephen R. Kane,J. B. Marquette,R. M. Martin,P. J. Meintjes,J. W. Menzies,K. R. Pollard,Kailash C. Sahu,Colin Snodgrass,Iain A. Steele,Rachel Street,Yiannis Tsapras,Joachim Wambsganss,Andrew Williams,M. Zub,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,Łukasz Wyrzykowski,Krzysztof Ulaczyk,William H. Allen,G. W. Christie,Darren L. DePoy,B. S. Gaudi,C. Han,J. Janczak,C.-U. Lee,Jennie McCormick,F. Mallia,B. Monard,Tim Natusch,Byeong-Gon Park,Richard W. Pogge,R. Santallo +107 more
TL;DR: The OGLE-2007-BLG-368Lb with a planet-star mass ratio of q = [9.5 ± 2.1] × 10^(-5] via gravitational microlensing was discovered in real-time thanks to the high cadence of the Microlensing Observations in Astrophysics survey and intensive followup observations.
Journal ArticleDOI
A Low-Mass Planet with a Possible Sub-Stellar-Mass Host in Microlensing Event MOA-2007-BLG-192
David P. Bennett,Ian A. Bond,Andrzej Udalski,Takahiro Sumi,Fumio Abe,Akihiko Fukui,K. Furusawa,John B. Hearnshaw,S. Holderness,Yoshitaka Itow,Kisaku Kamiya,A. V. Korpela,P. M. Kilmartin,W. Lin,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,N. Miyake,Yasushi Muraki,M. Nagaya,Teppei Okumura,Kouji Ohnishi,Y. C. Perrott,Nicholas J. Rattenbury,Takashi Sako,To. Saito,Susumu Sato,L. Skuljan,Denis J. Sullivan,Winston L. Sweatman,P. J. Tristram,Philip Yock,M. Kubiak,Michał K. Szymański,Grzegorz Pietrzyński,Igor Soszyński,O. Szewczyk,L. Wyrzykowski,K. Ulaczyk,V. Batista,J. P. Beaulieu,S. Brillant,Arnaud Cassan,P. Fouque,Pierre Kervella,D. Kubas,J. B. Marquette +46 more
TL;DR: In this article, the authors reported the detection of an extrasolar planet of mass ratio q ~ 2 x 10^(-4) in microlensing event MOA-2007-BLG-192.