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Campaign 9 of the K2 Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey

Henderson, Calen B. and Calchi Novati, S. and Akeson, R. and Beichman, C. A. and Ciardi, D. and Gelino, C. (2016) Campaign 9 of the K2 Mission: Observational Parameters, Scientific Drivers, and Community Involvement for a Simultaneous Space- and Ground-based Microlensing Survey. Publications of the Astronomical Society of the Pacific, 128 (970). Art. No. 124401. ISSN 0004-6280. doi:10.1088/1538-3873/128/970/124401.

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K2's Campaign 9 (K2C9) will conduct a ~3.7 deg^2 survey toward the Galactic bulge from 2016 April 22 through July 2 that will leverage the spatial separation between K2 and the Earth to facilitate measurement of the microlens parallax πE for ≳170 microlensing events. These will include several that are planetary in nature as well as many short-timescale microlensing events, which are potentially indicative of free-floating planets (FFPs). These satellite parallax measurements will in turn allow for the direct measurement of the masses of and distances to the lensing systems. In this article we provide an overview of the K2C9 space- and ground-based microlensing survey. Specifically, we detail the demographic questions that can be addressed by this program, including the frequency of FFPs and the Galactic distribution of exoplanets, the observational parameters of K2C9, and the array of resources dedicated to concurrent observations. Finally, we outline the avenues through which the larger community can become involved, and generally encourage participation in K2C9, which constitutes an important pathfinding mission and community exercise in anticipation of WFIRST.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Henderson, Calen B.0000-0001-8877-9060
Calchi Novati, S.0000-0002-7669-1069
Akeson, R.0000-0001-9674-1564
Beichman, C. A.0000-0002-5627-5471
Ciardi, D.0000-0002-5741-3047
Additional Information:© 2016 The Astronomical Society of the Pacific. Received 2016 March 7; Accepted 2016 July 15; Published 2016 October 26. C.B.H., R.P., M.P., R.A.S., D.P.B., D.W.H., and B.S.G. were supported through the NASA K2 Guest Observer Program. This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Work by C.B.H. and Y.S. was supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Universities Space Research Association 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 A.U. G.D. acknowledges Regione Campania for support from POR-FSE Campania 2014-2020. TCH is funded through KASI grant #2016-1-832-01. SM was supported by the Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences grant No. XDB09000000, and by the National Natural Science Foundation of China (NSFC) under grant number 11333003 and 11390372 (SM). C.B.H. thanks graphic designer Kathryn Chamberlain for her generous assistance with Figure 4. © California Institute of Technology. Government sponsorship acknowledged.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASA Postdoctoral ProgramUNSPECIFIED
Narodowe Centrum Nauki (NCN)MAESTRO 2014/14/A/ST9/00121
Regione CampaniaUNSPECIFIED
Korea Astronomy and Space Science Institute (KASI)2016-1-832-01
Chinese Academy of SciencesXDB09000000
National Natural Science Foundation of China11333003
National Natural Science Foundation of China11390372
Subject Keywords:binaries: general - Galaxy: bulge - gravitational lensing: micro - planets and satellites: detection - planets and satellites: fundamental parameters
Issue or Number:970
Record Number:CaltechAUTHORS:20160914-083754165
Persistent URL:
Official Citation:Calen B. Henderson et al 2016 PASP 128 124401
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70332
Deposited By: Tony Diaz
Deposited On:29 Sep 2016 23:49
Last Modified:11 Nov 2021 04:27

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