Artículo

The SOPHIE search for northern extrasolar planets XV: A warm Neptune around the M dwarf Gl 378

Hobson, M. J.; Delfosse, X.; Astudillo Defru, N.; Boisse, I.; Diaz, Rodrigo FernandoIcon ; Bouchy, F.; Bonfils, X.; Forveille, T.; Arnold, L.; Borgniet, S.; Bourrier, V.; Brugger, B.; Cabrera Salazar, N.; Courcol, B.; Dalal, S.; Deleuil, M.; Demangeon, O.; Dumusque, X.; Hara, N.; Hébrard, G.; Kiefer, F.; Lopez, T.; Mignon, L.; Montagnier, G.; Mousis, O.; Moutou, C.; Pepe, F.; Rey, J.; Santerne, A.; Santos, N. C.; Stalport, M.; Ségransan, D.; Udry, S.; Wilson, P. A.
Fecha de publicación: 05/2019
Editorial: EDP Sciences
Revista: Astronomy and Astrophysics
ISSN: 0004-6361
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

We present the detection of a warm Neptune orbiting the M dwarf Gl 378, using radial velocity measurements obtained with the SOPHIE spectrograph at the Observatoire de Haute-Provence. The star was observed in the context of the SOPHIE exoplanet consortium's sub-programme dedicated to finding planets around M dwarfs. Gl 378 is an M1 star, of solar metallicity, at a distance of 14.96 pc. The single planet detected, Gl 378 b, has a minimum mass of 13.02 MEarth and an orbital period of 3.82 days, which place it at the lower boundary of the hot Neptune desert. As one of only a few such planets around M dwarfs, Gl 378 b provides important clues to the evolutionary history of these close-in planets. In particular, the eccentricity of 0.1 may point to a high-eccentricity migration. The planet may also have lost part of its envelope due to irradiation.
Palabras clave: PLANETARY SYSTEMS , STARS: INDIVIDUAL: G1 378 , STARS: LATE-TYPE , TECHNIQUES: RADIAL VELOCITIES
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/213421
URL: https://www.aanda.org/10.1051/0004-6361/201834890
DOI: http://dx.doi.org/10.1051/0004-6361/201834890
Colecciones
Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Citación
Hobson, M. J.; Delfosse, X.; Astudillo Defru, N.; Boisse, I.; Diaz, Rodrigo Fernando; et al.; The SOPHIE search for northern extrasolar planets XV: A warm Neptune around the M dwarf Gl 378; EDP Sciences; Astronomy and Astrophysics; 625; 5-2019; 1-10
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