Stellar spin-orbit misalignment in a multiplanet system

Daniel Huber, Joshua A. Carter, Mauro Barbieri, Andrea Miglio, Katherine M. Deck, Daniel C. Fabrycky, Benjamin T. Montet, Lars A. Buchhave, William J. Chaplin, Saskia Hekker, Josefina Montalbán, Roberto Sanchis-Ojeda, Sarbani Basu, Timothy R. Bedding, Tiago L. Campante, Jørgen Christensen-Dalsgaard, Yvonne P. Elsworth, Dennis Stello, Torben Arentoft, Eric B. FordRonald L. Gilliland, Rasmus Handberg, Andrew W. Howard, Howard Isaacson, John Asher Johnson, Christoffer Karoff, Steven D. Kawaler, Hans Kjeldsen, David W. Latham, Mikkel N. Lund, Mia Lundkvist, Geoffrey W. Marcy, Travis S. Metcalfe, Victor Silva Aguirre, Joshua N. Winn

Research output: Contribution to journalArticle

166 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)331-334
Number of pages4
JournalScience
Volume342
Issue number6156
DOIs
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • General

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    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., ... Winn, J. N. (2013). Stellar spin-orbit misalignment in a multiplanet system. Science, 342(6156), 331-334. https://doi.org/10.1126/science.1242066