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Stellar Spin-Orbit Misalignment in a Multiplanet System

Huber, Daniel and Montet, Benjamin T. and Howard, Andrew W. and Johnson, John Asher (2013) Stellar Spin-Orbit Misalignment in a Multiplanet System. Science, 342 (6156). pp. 331-334. ISSN 0036-8075.

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Stars hosting hot Jupiters are often observed to have high obliquities, whereas stars with multiple coplanar planets have been seen to have low obliquities. This has been interpreted as evidence that hot-Jupiter formation is linked to dynamical disruption, as opposed to planet migration through a protoplanetary disk. We used asteroseismology to measure a large obliquity for Kepler-56, a red giant star hosting two transiting coplanar planets. These observations show that spin-orbit misalignments are not confined to hot-Jupiter systems. Misalignments in a broader class of systems had been predicted as a consequence of torques from wide-orbiting companions, and indeed radial velocity measurements revealed a third companion in a wide orbit in the Kepler-56 system.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle Paper
Huber, Daniel0000-0001-8832-4488
Montet, Benjamin T.0000-0001-7516-8308
Howard, Andrew W.0000-0001-8638-0320
Johnson, John Asher0000-0001-9808-7172
Additional Information:© 2013 American Association for the Advancement of Science. Received for publication 18 June 2013; Accepted for publication 4 September 2013. We gratefully acknowledge the entire Kepler team for making this paper possible. Funding for the Kepler Mission is provided by NASA’s Science Mission Directorate. We thank E. Agol and D. Raggozine for helpful comments on the manuscript. Supported by an appointment to the NASA Postdoctoral Program at Ames Research Center, administered by Oak Ridge Associated Universities through a contract with NASA (D.H.); a NSF Graduate Research Fellowship (K.M.D.); a NSF Graduate Research Fellowship under grant DGE1144469 (B.T.M.); the Netherlands Organisation for Scientific Research (S.H.); BELSPO for contract PRODEX COROT ( J.M.); the NASA Kepler Participating Scientist program (R.S.-O., J.N.W., and E.B.F.); NSF grant AST-1105930 (S.B.); and the David and Lucile Packard and Alfred P. Sloan foundations (J.A.J.). J.A.C. is a Hubble Fellow of the Harvard-Smithsonian Center for Astrophysics. Funding for the Stellar Astrophysics Centre is provided by Danish National Research Foundation grant DNRF106. The research is supported by the ASTERISK (Asteroseismic Investigations with SONG and Kepler) project funded by the European Research Council (grant agreement 267864).
Funding AgencyGrant Number
NASA Postdoctoral ProgramUNSPECIFIED
NSF Graduate Research FellowshipDGE-1144469
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Belgian Federal Science Policy Office (BELSPO)UNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Danish National Research FoundationDNRF106
European Research Council (ERC)267864 ASTERISK
Issue or Number:6156
Record Number:CaltechAUTHORS:20131111-140945270
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42357
Deposited By: Jason Perez
Deposited On:12 Nov 2013 16:44
Last Modified:09 Mar 2020 13:19

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