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Planet Hunters X: Searching for Nearby Neighbors of 75 Planet and Eclipsing Binary Candidates from the K2 Kepler Extended Mission

Schmitt, Joseph R. and Tokovinin, Andrei and Wang, Ji and Fischer, Debra A. and Kristiansen, Martti H. and LaCourse, Daryll M. and Gagliano, Robert and Tan, Arvin Joseff V. and Schwengeler, Hans Martin and Omohundro, Mark R. and Venner, Alexander and Terentev, Ivan and Schmitt, Allan R. and Jacobs, Thomas L. and Winarski, Troy and Sejpka, Johann and Jek, Kian J. and Boyajian, Tabetha S. and Brewer, John M. and Ishikawa, Sascha T. and Lintott, Chris J. and Lynn, Stuart and Schawinski, Kevin and Schwamb, Megan E. and Weiksnar, Alex (2016) Planet Hunters X: Searching for Nearby Neighbors of 75 Planet and Eclipsing Binary Candidates from the K2 Kepler Extended Mission. Astronomical Journal, 151 (6). Art. No. 159. ISSN 1538-3881. https://resolver.caltech.edu/CaltechAUTHORS:20160719-085920338

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Abstract

We present high-resolution observations of a sample of 75 K2 targets from Campaigns 1–3 using speckle interferometry on the Southern Astrophysical Research (SOAR) telescope and adaptive optics imaging at the Keck II telescope. The median SOAR I-band and Keck K_s-band detection limits at 1" were Δm_I = 4.4 mag and Δm_K_s = 6.1 mag, respectively. This sample includes 37 stars likely to host planets, 32 targets likely to be eclipsing binaries (EBs), and 6 other targets previously labeled as likely planetary false positives. We find nine likely physically bound companion stars within 3" of three candidate transiting exoplanet host stars and six likely EBs. Six of the nine detected companions are new discoveries. One of these new discoveries, EPIC 206061524, is associated with a planet candidate. Among the EB candidates, companions were only found near the shortest period ones (P < 3 days), which is in line with previous results showing high multiplicity near short-period binary stars. This high-resolution data, including both the detected companions and the limits on potential unseen companions, will be useful in future planet vetting and stellar multiplicity rate studies for planets and binaries.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.3847/0004-6256/151/6/159DOIArticle
http://iopscience.iop.org/article/10.3847/0004-6256/151/6/159/metaPublisherArticle
https://arxiv.org/abs/1603.06945arXivDiscussion Paper
ORCID:
AuthorORCID
Wang, Ji0000-0002-4361-8885
Fischer, Debra A.0000-0003-2221-0861
Boyajian, Tabetha S.0000-0001-9879-9313
Brewer, John M.0000-0002-9873-1471
Lintott, Chris J.0000-0001-5578-359X
Schawinski, Kevin0000-0001-5464-0888
Additional Information:© 2016 The American Astronomical Society. Received 2016 January 18; accepted 2016 March 15; published 2016 May 27. This paper includes data collected by the Kepler spacecraft, and we gratefully acknowledge the entire Kepler mission team’s efforts in obtaining and providing the light curves used in this analysis. Funding for the Kepler mission is provided by the NASA Science Mission directorate. Support for MAST for non-HST data is provided by the NASA Office of Space Science via grant NNX13AC07G and by other grants and contracts. This research has made use of NASA’s Astrophysics Data System Bibliographic Services, the Washington Double Star Catalog maintained at the U.S. Naval Observatory, and the APASS database, located at the AAVSO website. Funding for APASS has been provided by the Robert Martin Ayers Sciences Fund. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. The SDSS website is www.sdss.org. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration.
Funders:
Funding AgencyGrant Number
NASANNX13AC07G
Robert Martin Ayers Sciences FundUNSPECIFIED
NSFUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Participating InstitutionsUNSPECIFIED
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:binaries: eclipsing; binaries: general; planets and satellites: detection; techniques: high angular resolution
Issue or Number:6
Record Number:CaltechAUTHORS:20160719-085920338
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160719-085920338
Official Citation:Joseph R. Schmitt et al 2016 The Astronomical Journal 151 159
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69107
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:19 Jul 2016 18:26
Last Modified:01 Nov 2019 18:35

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