Published in

Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S276(6), p. 499-500, 2010

DOI: 10.1017/s1743921311020965

Hans Publishers, Astronomy and Astrophysics, (512), p. A77, 2010

DOI: 10.1051/0004-6361/200912789

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Hot Jupiters and the evolution of stellar angular momentum

Journal article published in 2010 by Cilia Damiani, Antonino F. Lanza ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Data provided by SHERPA/RoMEO

Abstract

AbstractA close-in massive planet affects the angular momentum of its host star through tidal and magnetic interactions. The transiting planets allow us to study the distribution of the spin and orbital angular momenta in star-planet systems. Considering a sample of about 70 systems, we find that stars having an effective temperature between 6000 and 6700 K and a rotation period shorter than 10 days show a rotation synchronized with the orbit of their hot Jupiters or have a rotation period twice the orbital period of their planets. Such rotational behaviours cannot be explained on the basis of tidal interactions alone. Besides, the gyrochronology relationship for those systems holds if an angular momentum loss rate smaller by about 30 percent than in stars without hot Jupiters is assumed.

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