Status: Bibliographieeintrag
Standort: ---
Exemplare:
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| Online-Ressource |
Verfasst von: | Trifonov, Trifon [VerfasserIn]  |
| Reffert, Sabine [VerfasserIn]  |
| Brems, Stefan S. [VerfasserIn]  |
Titel: | Three planets around HD 27894 |
Titelzusatz: | a close-in pair with a 2:1 period ratio and an eccentric Jovian planet at 5.4 AU |
Verf.angabe: | T. Trifonov, M. Kürster, M. Zechmeister, O.V. Zakhozhay, S. Reffert, M.H. Lee, F. Rodler, S.S. Vogt, and S.S. Brems |
Fussnoten: | Gesehen am 11.10.2017 |
Titel Quelle: | Enthalten in: De.arxiv.org |
Jahr Quelle: | 2017 |
Band/Heft Quelle: | (2017) Artikel-Nummer 1706.00509, 5 Seiten |
Abstract: | Aims. Our new program with HARPS aims to detect mean motion resonant planetary systems around stars which were previously reported to have a single bona fide planet, often based only on sparse radial velocity data. Methods. Archival and new HARPS radial velocities for the K2V star HD 27894 were combined and fitted with a three-planet self-consistent dynamical model. The best-fit orbit was tested for long-term stability. Results. We find clear evidence that HD 27894 is hosting at least three massive planets. In addition to the already known Jovian planet with a period $P_{\rm b}$ $\approx$ 18 days we discover a Saturn-mass planet with $P_{\rm c}$ $\approx$ 36 days, likely in a 2:1 mean motion resonance with the first planet, and a cold massive planet ($\approx$ 5.3 $M_{\mathrm{Jup}}$) with a period $P_{\rm d}$ $\approx$ 5170 days on a moderately eccentric orbit ( |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Kostenfrei: Verlag: http://arxiv.org/abs/1706.00509 |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1564282937 |
Verknüpfungen: | → Sammelwerk |
Three planets around HD 27894 / Trifonov, Trifon [VerfasserIn] (Online-Ressource)
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