Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/193406
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | The CARMENES search for exoplanets around M dwarfs: Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421) |
Autor: | Lalitha, S.; Baroch, David CSIC ORCID; Morales, Juan Carlos CSIC ORCID; Passegger, V.M.; Bauer, FF ; Cardona Guillén, C.; Dreizler, S.; Oshagh, M.; Reiners, Ansgar; Ribas, Ignasi CSIC ORCID; Caballero, J. A. CSIC ORCID; Quirrenbach, Andreas; Amado, Pedro J. CSIC ORCID; Béjar, Victor J. S.; Colomé, J. CSIC ORCID; Cortés-Contreras, M. CSIC ORCID; Galadí-Enriquez, D. CSIC ORCID; González-Cuesta, L.; Guenther, E. W.; Hagen, Hans-Jürgen; Henning, Thomas; Herrero, E.; Husser, T. O.; Jeffers, Sandra V.; Kaminski, Adrian; Kürster, M.; Lafarga, M. CSIC ORCID; Lodieu, N.; López González, Maria J. ; Montes, D.; Perger, M. CSIC ORCID; Rosich, Albert CSIC; Rodríguez Martínez, Eloy CSIC ORCID ; Rodríguez-López, Cristina CSIC ORCID; Schmitt, Jürgen H. M. M.; Tal-Or, L.; Zechmeister, Mathias | Palabras clave: | Stars: individual: GJ 686 Stars: individual: LSPM J2116+0234 Stars: low-mass Techniques: radial velocities Planetary systems Stars: activity |
Fecha de publicación: | 2019 | Editor: | EDP Sciences | Citación: | Astronomy and Astrophysics 627: A116 (2019) | Resumen: | Although M dwarfs are known for high levels of stellar activity, they are ideal targets for the search of low-mass exoplanets with the radial velocity (RV) method. We report the discovery of a planetary-mass companion around LSPM J2116+0234 (M3.0 V) and confirm the existence of a planet orbiting GJ 686 (BD+18 3421; M1.0 V). The discovery of the planet around LSPM J2116+0234 is based on CARMENES RV observations in the visual and near-infrared channels. We confirm the planet orbiting around GJ 686 by analyzing the RV data spanning over two decades of observationsfrom CARMENES VIS, HARPS-N, HARPS, and HIRES. We find planetary signals at 14.44 and 15.53 d in the RV data for LSPM J2116+0234 and GJ 686, respectively. Additionally, the RV, photometric time series, and various spectroscopic indicators show hints of variations of 42 d for LSPM J2116+0234 and 37 d for GJ 686, which we attribute to the stellar rotation periods. The orbital parameters of the planets are modeled with Keplerian fits together with correlated noise from the stellar activity. A mini-Neptune with a minimum mass of 11.8 M orbits LSPM J2116+0234 producing a RV semi-amplitude of 6.19 m s, while a super-Earth of mass 6.6 M orbits GJ 686 and produces a RV semi-amplitude of 3.0 m s. Both LSPM J2116+0234 and GJ 686 have planetary companions populating the regime of exoplanets with masses lower than 15 M and orbital periods <20 d.© ESO 2019. | Versión del editor: | http://dx.doi.org/10.1051/0004-6361/201935534 | URI: | http://hdl.handle.net/10261/193406 | DOI: | 10.1051/0004-6361/201935534 | Identificadores: | doi: 10.1051/0004-6361/201935534 issn: 1432-0746 |
Aparece en las colecciones: | (CAB) Artículos (ICE) Artículos (IAA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
IAA_2019_aa35534-19.pdf | 39,21 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
11
checked on 13-abr-2024
WEB OF SCIENCETM
Citations
10
checked on 29-feb-2024
Page view(s)
256
checked on 18-abr-2024
Download(s)
133
checked on 18-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.