Stellar Spin-Orbit Misalignment in a Multiplanet System

Huber, D.; Carter, J.A.; Barbieri, M.; Miglio, A.; Deck, K.M.; Fabrycky, D.C.; Montet, B.T.; Buchhave, L.A.; Chaplin, W.J.; Hekker, S.; Montalbán, J.; Sanchis-Ojeda, R.; Basu, S.; Bedding, T.R.; Campante, T.L.; Christensen-Dalsgaard, J.; Elsworth, Y.P.; Stello, D.; Arentoft, T.; Ford, E.B.; Gilliland, R.L.; Handberg, R.; Howard, A.W.; Isaacson, H.; Johnson, J.A.; Karoff, C.; Kawaler, S.D.; Kjeldsen, H.; Latham, D.W.; Lund, M.N.; Lundkvist, M.; Marcy, G.W.; Metcalfe, T.S.; Silva Aguirre, V.; Winn, J.N.

doi:http://dx.doi.org/10.1126/science.1242066

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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