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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 710165.0, MPI für Astronomie / Publikationen_mpia
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, T.; Mancini, L.; Ciceri, S.; Figueira, P.; Santos, N. C.; Aceituno, J.; Sánchez, S.
Date of Publication (YYYY-MM-DD):2014
Title of Journal:Astronomy and Astrophysics
Volume:568
Start Page:id.L1 (4 pp)
Audience:Not Specified
Abstract / Description:The object transiting the star <ASTROBJ>Kepler-91</ASTROBJ> 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 <ASTROBJ>Kepler-91b</ASTROBJ> 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.
Free Keywords:planets and satellites: gaseous planets; techniques: radial velocities; planets and satellites: individual: Kepler-91; planets and satellites: individual: KOI-2133; planets and satellites: individual: KIC 8219268; planet-star interactions
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6361 %R 10.1051/0004-6361/201424587
URL:http://cdsads.u-strasbg.fr/abs/2014A%26A...568L......
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