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Mikkel Nørup Lund

Stellar Spin-Orbit Misalignment in a Multiplanet System

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  • Daniel Huber, NASA Ames Research Center, MS 244-30, Moffett Field, CA 94035, USA
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  • Joshua A. Carter, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
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  • Mauro Barbieri, CISAS, University of Padua, via Venezia 15, 35131 Padova, Italy
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  • Andrea Miglio, School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
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  • Katherine M. Deck, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • Daniel C. Fabrycky, Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637, USA
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  • Benjamin T. Montet, Department of Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
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  • Lars A. Buchhave, Københavns Universitet, Centre for Star and Planet Formation, Natural History Museum of Denmark, University of Copenhagen, Danmark
  • William J. Chaplin, School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
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  • Saskia Hekker, Astronomical Institute “Anton Pannekoek,” University of Amsterdam, 1098 XH Amsterdam, Netherlands.
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  • Josefina Montalbán, Institut d’Astrophysique et de Géophysique de l’Université de Liège, B 4000 Liège, Belgium
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  • Roberto Sanchis-Ojeda, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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  • Sarbani Basu, Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520, USA
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  • Timothy R. Bedding, University of Sydney, Australien
  • Tiago L. Campante, School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
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  • Jørgen Christensen-Dalsgaard
  • Yvonne P. Elsworth, School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
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  • Dennis Stello, Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark.
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  • Torben Arentoft, Danmark
  • Eric B. Ford, Center for Exoplanets and Habitable Worlds, Pennsylvania State University, University Park, PA 16802, USA.
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  • Ronald L. Gilliland, Center for Exoplanets and Habitable Worlds, Pennsylvania State University, University Park, PA 16802, USA.
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  • Rasmus Handberg, School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
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  • Andrew W. Howard, Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA
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  • Howard Isaacson, Department of Astronomy, University of California, Berkeley, CA 94720, USA
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  • John Asher Johnson, Department of Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
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  • Christoffer Karoff
  • Steven D. Kawaler, Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA
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  • Hans Kjeldsen
  • David W. Latham, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
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  • Mikkel N. Lund
  • Mia Lundkvist
  • Geoffrey W. Marcy, Department of Astronomy, University of California, Berkeley, CA 94720, USA
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  • Travis S. Metcalfe
  • Victor Silva Aguirre
  • Joshua N. Winn, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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.
OriginalsprogEngelsk
TidsskriftScience
Vol/bind342
Nummer6156
Sider (fra-til)331-334
Antal sider4
ISSN0036-8075
DOI
StatusUdgivet - 18 okt. 2013

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