2014/08/01 by J. Lillo-Box, D. Barrado, Th. Henning +7 · 2 citations
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Astrophysics and Star Formation Studies #Binary number #Brightness #Kepler #Light curve #Orbital inclination #Physics #Planet #Radial velocity #Spectral line #Spectrograph #Stars #Stellar, planetary, and galactic studies #astro-ph.EP
paper · pdf · doi:10.1051/0004-6361/201424587
published as A&A 568, L1 (2014) · Accepted for publication in A&A Letters on July 31st, 2014. 5 pages, 2 figures, 2 tables
openalex publication_date 2014/08/01 · arxiv created 2014/08/07 · arxiv updated 2014/09/05 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/31
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 anindependent 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.