One or more bound planets per Milky Way star from microlensing observations

A. Cassan (), D. Kubas, J.-P. Beaulieu, M. Dominik, K. Horne, J. Greenhill, J. Wambsganss, J. Menzies, A. Williams, U. G. Jørgensen, A. Udalski, D. P. Bennett, M. D. Albrow, V. Batista, S. Brillant, J. A. R. Caldwell, A. Cole (), Ch. Coutures, K. H. Cook, S. Dieters, D. Dominis Prester, J. Donatowicz, P. Fouqué, K. Hill, N. Kains, S. Kane, J.-B. Marquette, R. Martin, K. R. Pollard, K. C. Sahu, C. Vinter, D. Warren, B. Watson, M. Zub, T. Sumi, M. K. Szymański, M. Kubiak, R. Poleski, I. Soszynski, K. Ulaczyk, G. Pietrzyński and Ł. Wyrzykowski
Additional contact information
A. Cassan: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
D. Kubas: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
J.-P. Beaulieu: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
M. Dominik: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
K. Horne: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
J. Greenhill: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
J. Wambsganss: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
J. Menzies: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
A. Williams: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
U. G. Jørgensen: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
A. Udalski: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
D. P. Bennett: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
M. D. Albrow: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
V. Batista: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
S. Brillant: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
J. A. R. Caldwell: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
A. Cole: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
Ch. Coutures: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
K. H. Cook: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
S. Dieters: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
D. Dominis Prester: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
J. Donatowicz: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
P. Fouqué: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
K. Hill: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
N. Kains: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
S. Kane: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
J.-B. Marquette: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
R. Martin: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
K. R. Pollard: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
K. C. Sahu: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
C. Vinter: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
D. Warren: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
B. Watson: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
M. Zub: Probing Lensing Anomalies Network (PLANET) Collaboration, Institut d’Astrophysique de Paris, Université Pierre & Marie Curie, UMR7095 UPMC–CNRS 98 bis boulevard Arago, 75014 Paris, France
T. Sumi: Microlensing Observations in Astrophysics (MOA) Collaboration, Osaka University
M. K. Szymański: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
M. Kubiak: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
R. Poleski: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
I. Soszynski: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
K. Ulaczyk: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
G. Pietrzyński: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland
Ł. Wyrzykowski: Optical Gravitational Lensing Experiment (OGLE) Collaboration, Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

Nature, 2012, vol. 481, issue 7380, 167-169

Abstract: A statistical analysis of microlensing data from 2002–07 reveals that stars in the Milky Way are orbited by planets as a rule, rather than an exception.

Date: 2012
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DOI: 10.1038/nature10684

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