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Planet Sensitivity from Combined Ground- and Space-based Microlensing Observations

Zhu, Wei and Beichman, Charles and Calchi Novati, Sebastiano and Carey, Sean (2015) Planet Sensitivity from Combined Ground- and Space-based Microlensing Observations. Astrophysical Journal, 814 (2). Art. No. 129. ISSN 0004-637X.

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To move one step forward toward a Galactic distribution of planets, we present the first planet sensitivity analysis for microlensing events with simultaneous observations from space and the ground. We present this analysis for two such events, OGLE-2014-BLG-0939 and OGLE-2014-BLG-0124, which both show substantial planet sensitivity even though neither of them reached high magnification. This suggests that an ensemble of low to moderate magnification events can also yield significant planet sensitivity, and therefore probability, for detecting planets. The implications of our results to the ongoing and future space-based microlensing experiments to measure the Galactic distribution of planets are discussed.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Zhu, Wei0000-0003-4027-4711
Beichman, Charles0000-0002-5627-5471
Calchi Novati, Sebastiano0000-0002-7669-1069
Carey, Sean0000-0002-0221-6871
Additional Information:© 2015 American Astronomical Society. Received 2015 July 30; accepted 2015 October 9; published 2015 November 25. Work by W.Z. and A.G. was supported by JPL grant 1500811. Work by J.C.Y. and M.P. was performed under contract with the California Institute of Technology (Caltech)/Jet Propulsion Laboratory (JPL), funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. Work by Y.S. is supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Oak Ridge Associated Universities through a contract with NASA. The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to AU. T.S. acknowledges the financial support from JSPS23103002, JSPS24253004, and JSPS26247023. The MOA project is supported by the grant JSPS25103508 and 23340064. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASA Postdoctoral ProgramUNSPECIFIED
National Science Centre (Poland)MAESTRO 2014/14/A/ST9/00121
Japan Society for the Promotion of Science (JSPS)JSPS23103002
Japan Society for the Promotion of Science (JSPS)JSPS24253004
Japan Society for the Promotion of Science (JSPS)JSPS26247023
Japan Society for the Promotion of Science (JSPS)JSPS25103508
Japan Society for the Promotion of Science (JSPS)23340064
Subject Keywords:gravitational lensing: micro; planetary systems
Issue or Number:2
Record Number:CaltechAUTHORS:20151223-071050412
Persistent URL:
Official Citation:Wei Zhu (祝伟) et al 2015 ApJ 814 129
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63163
Deposited By: Ruth Sustaita
Deposited On:23 Dec 2015 18:27
Last Modified:24 Feb 2020 10:30

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