Confirmation of the radial velocity super-Earth K2-18c with HARPS and CARMENES

In an earlier campaign to characterize the mass of the transiting temperate super-Earth K2-18b with HARPS, a second, non-transiting planet was posited to exist in the system at ~9 days. Further radial velocity follow-up with the CARMENES spectrograph visible channel revealed a much weaker signal at...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2019-01, Vol.621, p.A49
Hauptverfasser:	Cloutier, R., Astudillo-Defru, N., Doyon, R., Bonfils, X., Almenara, J.-M., Bouchy, F., Delfosse, X., Forveille, T., Lovis, C., Mayor, M., Menou, K., Murgas, F., Pepe, F., Santos, N. C., Udry, S., Wünsche, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anomalies Astrophysics Earth Extrasolar planets methods: data analysis Modelling Physics Planet detection Planetary mass Planetary systems planets and satellites: detection planets and satellites: fundamental parameters planets and satellites: individual: K2-18 Radial velocity Sampling Spectrographs Stellar activity techniques: radial velocities Velocity
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