SIMBAD references

2019A&A...625A..18H - Astronomy and Astrophysics, volume 625A, 18-18 (2019/5-1)

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 R.F., 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., HEBRARD G., KIEFER F., LOPEZ T., MIGNON L., MONTAGNIER G., MOUSIS O., MOUTOU C., PEPE F., REY J., SANTERNE A., SANTOS N.C., STALPORT M., SEGRANSAN D., UDRY S. and WILSON P.A.

Abstract (from CDS):

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 14.96pc. The single planet detected, Gl 378 b, has a minimum mass of 13.02MEarth 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.

Abstract Copyright: © M. J. Hobson et al. 2019

Journal keyword(s): techniques: radial velocities - planetary systems - stars: late-type - stars: individual: Gl 378

Simbad objects: 17

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2021.09.20-17:21:39

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