Publication details

Transit timing variations, radial velocities, and long-term dynamical stability of the system Kepler-410

Investor logo
Authors

GAJDOŠ Pavol VAŇKO Martin PRIBULLA Theodor DUPKALA Daniel ŠUBJAK Ján SKARKA Marek KABÁTH Petr HAMBÁLEK Lubomír PARIMUCHA Štefan

Year of publication 2019
Type Article in Periodical
Magazine / Source Monthly Notices of the Royal Astronomical Society
MU Faculty or unit

Faculty of Science

Citation
Web Full Text
Doi http://dx.doi.org/10.1093/mnras/stz305
Keywords planetary systems; planets and satellites: dynamical evolution andstability; techniques: radial velocities; methods: numerical; stars: individual: Kepler-410
Description Transit timing variations of Kepler-410Ab were already reported in a few papers.Their semi-amplitude is about 14.5 minutes. In our previous paper, we found thatthe transit timing variations could be caused by the presence of a stellar companionin this system. Our main motivation for this paper was to investigate variation in aradial-velocity curve generated by this additional star in the system. We performedspectroscopic observation of Kepler-410 using three telescopes in Slovakia and CzechRepublic. Using the cross-correlation function, we measured the radial velocities of thestar Kepler-410A. We did not observe any periodic variation in a radial-velocity curve.Therefore, we rejected our previous hypothesis about additional stellar companionin the Kepler-410 system. We ran different numerical simulations to study mean-motion resonances with Kepler-410Ab. Observed transit timing variations could bealso explained by the presence of a small planet near to mean-motion resonance 2:3with Kepler-410Ab. This resonance is stable on a long-time scale. We also looked forstable regions in the Kepler-410 system where another planet could exist for a longtime.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info