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- Title
Radial velocity confirmation of Kepler-91 b: Additional evidence of its planetary nature using the Calar Alto/CAFE instrument.
- Authors
Lillo-Box, J.; Barrado, D.; Henning, Th.; Mancini, L.; Ciceri, S.; Figueira, P.; Santos, N. C.; Aceituno, J.; Sánchez, S.
- Abstract
The object transiting the star Kepler-91 was recently assessed as being of planetary nature. The confirmation was achieved by analysing the light-curve modulations observed in the Kepler data. However, quasi-simultaneous studies claimed a self-luminous nature for this object, thus rejecting it as a planet. In this work, we apply an independent approach to confirm the planetary mass of Kepler-91b by using multi-epoch high-resolution spectroscopy obtained with the Calar Alto Fiber-fed Echelle spectrograph (CAFE). We obtain the physical and orbital parameters with the radial velocity technique. In particular, we derive a value of 1.09 ± 0.20 MJup for the mass of Kepler-91b, in excellent agreement with our previous estimate that was based on the orbital brightness modulation.
- Subjects
RADIAL velocity of stars; STELLAR mass; KEPLER'S laws; PLANETARY orbits; HIGH resolution spectroscopy
- Publication
Astronomy & Astrophysics / Astronomie et Astrophysique, 2014, Vol 568, p1
- ISSN
0004-6361
- Publication type
Article
- DOI
10.1051/0004-6361/201424587