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On the Stellar Companion to the Exoplanet Hosting Star 30 Arietis B

Kane, Stephen R. and Barclay, Thomas and Hartmann, Michael and Hatzes, Artie P. and Jensen, Eric L. N. and Ciardi, David R. and Huber, Daniel and Wright, Jason T. and Quintana, Elisa V. (2015) On the Stellar Companion to the Exoplanet Hosting Star 30 Arietis B. Astrophysical Journal, 815 (1). Art. No. 32. ISSN 0004-637X.

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A crucial aspect of understanding planet formation is determining the binarity of the host stars. Results from radial velocity (RV) surveys and the follow-up of Kepler exoplanet candidates have demonstrated that stellar binarity certainly does not exclude the presence of planets in stable orbits and the configuration may in fact be relatively common. Here we present new results for the 30 Arietis system which confirms that the B component hosts both planetary and stellar companions. Keck AO imaging provides direct detection of the stellar companion and additional RV data are consistent with an orbiting star. We present a revised orbit of the known planet along with photometry during predicted transit times. Finally, we provide constraints on the properties of the stellar companion based on orbital stability considerations.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Kane, Stephen R.0000-0002-7084-0529
Barclay, Thomas0000-0001-7139-2724
Jensen, Eric L. N.0000-0002-4625-7333
Ciardi, David R.0000-0002-5741-3047
Huber, Daniel0000-0001-8832-4488
Wright, Jason T.0000-0001-6160-5888
Additional Information:© 2015 The American Astronomical Society. Received 2014 December 16; accepted 2015 November 4; published 2015 December 3. The authors would like to thank Elliott Horch, Steve Howell, and Suvrath Mahadevan for several useful discussions. Thanks are also due to the anonymous referee whose helpful comments improved the manuscript. D.H. acknowledges support by the Australian Research Council's Discovery Projects funding scheme (project number DE140101364) and by NASA under Grant NNX14AB92G issued through the Kepler Participating Scientist Program. E.V.Q. is supported by a NASA Senior Fellowship at the Ames Research Center, administered by Oak Ridge Associated Universities through a contract with NASA. This work made use of the Digitized Sky Survey (DSS) hosted by the Mikulski Archive for Space Telescopes (MAST). This work was supported by a NASA Keck PI Data Award, administered by the NASA Exoplanet Science Institute. Data presented herein were obtained at the W. M. Keck Observatory from telescope time allocated to the National Aeronautics and Space Administration through the agencys scientific partnership with the California Institute of Technology and the University of California. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Australian Research CouncilDE140101364
W. M. Keck FoundationUNSPECIFIED
Subject Keywords:planetary systems; stars: individual (30 Ari B) ; techniques: high angular resolution; techniques: photometric; techniques: radial velocities
Issue or Number:1
Record Number:CaltechAUTHORS:20160115-105457667
Persistent URL:
Official Citation:Stephen R. Kane et al 2015 ApJ 815 32
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63706
Deposited By: Ruth Sustaita
Deposited On:15 Jan 2016 19:51
Last Modified:09 Mar 2020 13:18

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