Bibcode
Luque, R.; Nowak, G.; Pallé, E.; Dai, F.; Kaminski, A.; Nagel, E.; Hidalgo, D.; Bauer, F.; Lafarga, M.; Livingston, J.; Barragán, O.; Hirano, T.; Fridlund, M.; Gandolfi, D.; Justesen, A. B.; Hjorth, M.; Van Eylen, V.; Winn, J. N.; Esposito, M.; Morales, J. C.; Albrecht, S.; Alonso, R.; Amado, P. J.; Beck, P.; Caballero, J. A.; Cabrera, J.; Cochran, W. D.; Csizmadia, Sz.; Deeg, H.; Eigmüller, Ph.; Endl, M.; Erikson, A.; Fukui, A.; Grziwa, S.; Guenther, E. W.; Hatzes, A. P.; Knudstrup, E.; Korth, J.; Lam, K. W. F.; Lund, M. N.; Mathur, S.; Montañes-Rodríguez, P.; Narita, N.; Nespral, D.; Niraula, P.; Pätzold, M.; Persson, C. M.; Prieto-Arranz, J.; Quirrenbach, A.; Rauer, H.; Redfield, S.; Reiners, A.; Ribas, I.; Smith, A. M. S.
Bibliographical reference
Astronomy and Astrophysics, Volume 623, id.A114, 9 pp.
Advertised on:
3
2019
Journal
Citations
22
Refereed citations
19
Description
We present the discovery and characterization of a new transiting planet
from Campaign 17 of the Kepler extended mission K2. The planet K2-292 b
is a warm sub-Neptune on a 17 day orbit around a bright (V = 9.9 mag)
solar-like G3 V star with a mass and radius of M⋆ = 1.00
± 0.03 M⊙ and R⋆ = 1.09 ±
0.03 R⊙, respectively. We modeled simultaneously the K2
photometry and CARMENES spectroscopic data and derived a radius of
Rp=2.63-0.10+0.12 R⊕
and mass of Mp=24.5-4.4+4.4
M⊕, yielding a mean density of
ρp=7.4-1.5+1.6 g cm-3,
which makes it one of the densest sub-Neptunian planets known to date.
We also detected a linear trend in the radial velocities of K2-292
(γ˙RV = -0.40-0.07+0.07 m
s-1 d-1) that suggests a long-period companion
with a minimum mass on the order of 33 M⊕. If
confirmed, it would support a formation scenario of K2-292 b by
migration caused by Kozai-Lidov oscillations.
The light curve is only available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr
(ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/623/A114
Related projects
Helio and Astero-Seismology and Exoplanets Search
The principal objectives of this project are: 1) to study the structure and dynamics of the solar interior, 2) to extend this study to other stars, 3) to search for extrasolar planets using photometric methods (primarily by transits of their host stars) and their characterization (using radial velocity information) and 4) the study of the planetary
Savita
Mathur
Exoplanets and Astrobiology
The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
Enric
Pallé Bago
Exoplanets and Astrobiology
The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
Enric
Pallé Bago