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A Wide-orbit Exoplanet OGLE-2012-BLG-0838LbWe present the discovery of a planet on a very wide orbit in the microlensing event OGLE-2012-BLG-0838. The signal of the planet is well separated from the main peak of the event and the planet–star projected separation is found to be twice the Einstein ring radius, which corresponds to a projected separation of ≈4au. Similar planets around low-mass stars are very hard to find using any technique other than microlensing. We discuss microlensing model fitting in detail and discuss the prospects for measuring the mass and distance of the lens system directly.
Document ID
20205003465
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
R. Poleski (The Ohio State University Columbus, Ohio, United States)
Daisuke Suzuki (Institute of Space and Astronautical Science Tokyo, Japan)
A. Udalski (University of Warsaw Warsaw, Poland)
Xiaojia Xie (Kavli Institute for Theoretical Sciences Beijing, China)
J. C. Yee (Harvard-Smithsonian Center for Astrophysics Cambridge, Massachusetts, United States)
Naoki Koshimoto (University of Tokyo Tokyo, Japan)
B. S. Gaudi (The Ohio State University Columbus, Ohio, United States)
A. Gould (The Ohio State University Columbus, Ohio, United States)
J. Skowron (University of Warsaw Warsaw, Poland)
M. K. Szymanski (University of Warsaw Warsaw, Poland)
I. Soszynski (University of Warsaw Warsaw, Poland)
P. Pietrukowicz (University of Warsaw Warsaw, Poland)
S. Kozlowski (University of Warsaw Warsaw, Poland)
L. Wyrzykowski (University of Warsaw Warsaw, Poland)
K. Ulaczyk (University of Warsaw Warsaw, Poland)
Fumio Abe (Nagoya University Nagoya, Japan)
Richard K Barry (Goddard Space Flight Center Greenbelt, Maryland, United States)
David P Bennett (University of Maryland, College Park College Park, Maryland, United States)
Aparna Bhattacharya (University of Maryland, College Park College Park, Maryland, United States)
Ian A. Bond (Massey University Palmerston North, New Zealand)
Martin Donachie (University of Auckland Auckland, New Zealand)
Hirosane Fujii (Nagoya University Nagoya, Japan)
Akihiko Fukui (University of Tokyo Tokyo, Japan)
Yoshitaka Itow (Nagoya University Nagoya, Japan)
Yuki Hirao (UNIV OF MARYLAND COLLEGE PARK Greenbelt, Maryland, United States)
Yuhei Kamei (Nagoya University Nagoya, Japan)
Iona Kondo (Osaka University Osaka, Japan)
Man Cheung Alex Li (University of Auckland Auckland, New Zealand)
Yutaka Matsubara (Nagoya University Nagoya, Japan)
Shota Miyazaki (Osaka University Osaka, Japan)
Yasushi Muraki (Nagoya University Nagoya, Japan)
Masayuki Nagakane (Osaka University Osaka, Japan)
Clement Ranc (Goddard Space Flight Center Greenbelt, Maryland, United States)
Nicholas J. Rattenbury (University of Auckland Auckland, New Zealand)
Yuki K. Satoh (Osaka University Osaka, Japan)
Hikaru Shoji (Osaka University Osaka, Japan)
Haruno Suematsu (Osaka University Osaka, Japan)
Denis J. Sullivan (Victoria University Kampala, Uganda)
Takahiro Sumi (Osaka University Osaka, Japan)
Paul J. Tristram (University of Canterbury Christchurch, New Zealand)
Takeharu Yamakawa (Nagoya University Nagoya, Japan)
Tsubasa Yamawaki (Osaka University Osaka, Japan)
Atsunori Yonehara (Kyoto Sangyo University Kyoto, Kyôto, Japan)
C. Han (Chungbuk National University Cheongju-si, South Korea)
Subo Dong (Kavli Institute for Theoretical Sciences Beijing, China)
K. M. Morzinski (University of Arizona Tucson, Arizona, United States)
J. R. Males (University of Arizona Tucson, Arizona, United States)
L. M. Close (University of Arizona Tucson, Arizona, United States)
R. W. Pogge (The Ohio State University Columbus, Ohio, United States)
J.-P. Beaulieu (University of Tasmania Hobart, Tasmania, Australia)
J.-B. Marquette (Sorbonne University Paris, France)
Date Acquired
June 11, 2020
Publication Date
May 14, 2020
Publication Information
Publication: The Astronomical Journal
Publisher: American Astronomical Society
Volume: 159
Issue: 6
Issue Publication Date: June 1, 2020
ISSN: 0004-6256
e-ISSN: 1538-3881
DOI: 10.3847/1538-3881/ab8a49
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: 80GSFC17M0002
CONTRACT_GRANT: NNG16PJ32C
CONTRACT_GRANT: MAESTRO 2014/14/A/ST9/00121
CONTRACT_GRANT: AST-1516842
CONTRACT_GRANT: JPL 1500811
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
Technical Review
External Peer Committee

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