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Author
D. Huber
J.A. Carter
M. Barbieri
A. Miglio
K.M. Deck
D.C. Fabrycky
B.T. Montet
L.A. Buchhave
W.J. Chaplin
S. Hekker
J. Montalbán
R. Sanchis-Ojeda
S. Basu
T.R. Bedding
T.L. Campante
J. Christensen-Dalsgaard
Y.P. Elsworth
D. Stello
T. Arentoft
E.B. Ford
R.L. Gilliland
R. Handberg
A.W. Howard
H. Isaacson
J.A. Johnson
C. Karoff
S.D. Kawaler
H. Kjeldsen
D.W. Latham
M.N. Lund
M. Lundkvist
G.W. Marcy
T.S. Metcalfe
V. Silva Aguirre
J.N. Winn
Year
2013
Title
Stellar Spin-Orbit Misalignment in a Multiplanet System
Journal
Science
Volume | Issue number
342 | 6156
Pages (from-to)
331-334
Document type
Article
Faculty
Faculty of Science (FNWI)
Institute
Anton Pannekoek Institute for Astronomy (API)
Abstract
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.
URL
go to publisher's site
Language
English
Permalink
http://hdl.handle.net/11245/1.405619

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