Asteroseismic inference on rotation, gyrochronology and planetary system dynamics of 16 Cygni

G. R. Davies, W. J. Chaplin, W. M. Farr, R. A. García, M. N. Lund, S. Mathis, T. S. Metcalfe, T. Appourchaux, S. Basu, O. Benomar, T. L. Campante, T. Ceillier, Y. Elsworth, R. Handberg, D. Salabert, D. Stello

Research output: Contribution to journalArticle

Abstract

The solar analogues 16 Cyg A and B are excellent asteroseismic targets in the Kepler field of view and together with a red dwarf and a Jovian planet form an interesting system. For these more evolved Sun-like stars we cannot detect surface rotation with the current Kepler data but instead use the technique of asteroseimology to determine rotational properties of both 16 Cyg A and B. We find the rotation periods to be 23.8+1.5 -1.8 and 23.2+11.5 -3.2 d, and the angles of inclination to be 56+6 -5 ° and 36+17 -7 °, for A and B, respectively. Together with these results we use the published mass and age to suggest that, under the assumption of a solar-like rotation profile, 16 Cyg A could be used when calibrating gyrochronology relations. In addition, we discuss the known 16 Cyg B star-planet eccentricity and measured low obliquity which is consistent with Kozai cycling and tidal theory.

Original languageEnglish (US)
Pages (from-to)2959-2966
Number of pages8
JournalMonthly Notices of the Royal Astronomical Society
Volume446
Issue number3
DOIs
StatePublished - 2015

Keywords

  • Planet-star interactions
  • Stars: oscillations
  • Stars: rotation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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