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Delisle, J.-B.; Ségransan, D.; Dumusque, X.; Diaz, R.F.; Bouchy, F.; Lovis, C.; Pepe, F.; Udry, S.; Alonso, R.; Benz, W.; Coffinet, A.; Collier Cameron, A.; Deleuil, M.; Figueira, P.; Gillon, M.; Lo Curto, G.; Mayor, M.; Mordasini, C. (...) Wyttenbach, A. "The HARPS search for southern extra-solar planets: XLIII. A compact system of four super-Earth planets orbiting HD 215152" (2018) Astronomy and Astrophysics. 614
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Abstract:

We report the discovery of four super-Earth planets around HD 215152, with orbital periods of 5.76, 7.28, 10.86, and 25.2 d, and minimum masses of 1.8, 1.7, 2.8, and 2.9 M · respectively. This discovery is based on 373 high-quality radial velocity measurements taken by HARPS over 13 yr. Given the low masses of the planets, the signal-to-noise ratio is not sufficient to constrain the planet eccentricities. However, a preliminary dynamical analysis suggests that eccentricities should be typically lower than about 0.03 for the system to remain stable. With two pairs of planets with a period ratio lower than 1.5, with short orbital periods, low masses, and low eccentricities, HD 215152 is similar to the very compact multi-planet systems found by Kepler, which is very rare in radial-velocity surveys. This discovery proves that these systems can be reached with the radial-velocity technique, but characterizing them requires a huge amount of observations. © 2018 ESO.

Registro:

Documento: Artículo
Título:The HARPS search for southern extra-solar planets: XLIII. A compact system of four super-Earth planets orbiting HD 215152
Autor:Delisle, J.-B.; Ségransan, D.; Dumusque, X.; Diaz, R.F.; Bouchy, F.; Lovis, C.; Pepe, F.; Udry, S.; Alonso, R.; Benz, W.; Coffinet, A.; Collier Cameron, A.; Deleuil, M.; Figueira, P.; Gillon, M.; Lo Curto, G.; Mayor, M.; Mordasini, C.; Motalebi, F.; Moutou, C.; Pollacco, D.; Pompei, E.; Queloz, D.; Santos, N.C.; Wyttenbach, A.
Filiación:Observatoire de l'Université de Genève, 51 chemin des Maillettes, Sauverny, 1290, Switzerland
ASD, IMCCE, Observatoire de Paris, PSL Research University, UPMC Univ. Paris 6, CNRS, 77 avenue Denfert-Rochereau, Paris, 75014, France
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
CONICET-Universidad de Buenos Aires, Instituto de Astronomía y Física Del Espacio (IAFE), Buenos Aires, Argentina
Instituto de Astrofísica de Canarias, La Laguna, Tenerife, 38205, Spain
Dpto. de Astrofísica, Universidad de la Laguna, La Laguna, Tenerife, 38206, Spain
Physikalisches Institut, Universitat Bern, Silderstrasse 5, Bern, 3012, Switzerland
School of Physics and Astronomy, University of St. Andrews, North-Haugh-St. Andrews-Fife, KY16 9SS, United Kingdom
Aix Marseille Universite, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, Marseille, 13388, France
Instituto de Astrofísica e Ciências Do Espaço, Universidade Do Porto, CAUP, Rua das Estrelas, Porto, 4150-762, Portugal
Institut d'Astrophysique et de Géophysique, Université de Liège, Bat. B5C, Allée du 6 Août 17, Liège, 4000, Belgium
European Southern Observatory, Karl-Schwarzschild-Str. 2, Garching bei München, 85748, Germany
Canada France Hawaii Telescope Corporation, Kamuela, 96743, United States
Department of Physics, University of Warwick, Coventry, 4 7AL, United Kingdom
Cavendish Laboratory, J J Thomson Avenue, Cambridge, 3 0HE, United Kingdom
Departamento de Física e Astronomia, Faculdade de Ciências, Universidade Do Porto, Rua do Campo Alegre 4169-007, Porto, Portugal
Palabras clave:Planets and satellites: detection; Planets and satellites: dynamical evolution and stability; Planets and satellites: general; Extrasolar planets; Satellites; Signal to noise ratio; Compact system; Dynamical analysis; Orbital periods; Planets and satellites: detections; Planets and satellites: dynamical evolution and stabilities; Planets and satellites: general; Radial velocity; Radial velocity measurements; Orbits
Año:2018
Volumen:614
DOI: http://dx.doi.org/10.1051/0004-6361/201732529
Título revista:Astronomy and Astrophysics
Título revista abreviado:Astron. Astrophys.
ISSN:00046361
CODEN:AAEJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v614_n_p_Delisle

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Citas:

---------- APA ----------
Delisle, J.-B., Ségransan, D., Dumusque, X., Diaz, R.F., Bouchy, F., Lovis, C., Pepe, F.,..., Wyttenbach, A. (2018) . The HARPS search for southern extra-solar planets: XLIII. A compact system of four super-Earth planets orbiting HD 215152. Astronomy and Astrophysics, 614.
http://dx.doi.org/10.1051/0004-6361/201732529
---------- CHICAGO ----------
Delisle, J.-B., Ségransan, D., Dumusque, X., Diaz, R.F., Bouchy, F., Lovis, C., et al. "The HARPS search for southern extra-solar planets: XLIII. A compact system of four super-Earth planets orbiting HD 215152" . Astronomy and Astrophysics 614 (2018).
http://dx.doi.org/10.1051/0004-6361/201732529
---------- MLA ----------
Delisle, J.-B., Ségransan, D., Dumusque, X., Diaz, R.F., Bouchy, F., Lovis, C., et al. "The HARPS search for southern extra-solar planets: XLIII. A compact system of four super-Earth planets orbiting HD 215152" . Astronomy and Astrophysics, vol. 614, 2018.
http://dx.doi.org/10.1051/0004-6361/201732529
---------- VANCOUVER ----------
Delisle, J.-B., Ségransan, D., Dumusque, X., Diaz, R.F., Bouchy, F., Lovis, C., et al. The HARPS search for southern extra-solar planets: XLIII. A compact system of four super-Earth planets orbiting HD 215152. Astron. Astrophys. 2018;614.
http://dx.doi.org/10.1051/0004-6361/201732529