The HARPS search for southern extra-solar planets XXXII. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Lo Curto, G (Autor) Outra; Mayor, M (Autor) Outra; Benz, W (Autor) Outra; Bouchy, F (Autor) Outra; Hebrard, G (Autor) Outra; Lovis, C (Autor) Outra; Moutou, C (Autor) Outra; Naef, D (Autor) Outra; Pepe, F (Autor) Outra; Queloz, D (Autor) Outra; N.C. Santos (Autor) FCUP; Segransan, D (Autor) Outra; Udry, S (Autor) Outra

Revista

Título: Astronomy and Astrophysics

Vol. 551

Página Final: A59

ISSN: 0004-6361

Editora: EDP Sciences

Indexação

ISI Web of Knowledge - 20 Citações

Scopus - 24 Citações

Outras Informações

ID Authenticus: P-005-2RB

DOI: 10.1051/0004-6361/201220415

Abstract (EN): The vast diversity of planetary systems detected to date is defying our capability of understanding their formation and evolution. Well-defined volume-limited surveys are the best tool at our disposal to tackle the problem, via the acquisition of robust statistics of the orbital elements. We are using the HARPS spectrograph to conduct our survey of approximate to 850 nearby solar-type stars, and in the course of the past nine years we have monitored the radial velocity of HD 103774, HD 109271, and BD-061339. In this work we present the detection of five planets orbiting these stars, with m sin (i) between 0.6 and 7 Neptune masses, four of which are in two multiple systems, comprising one super-Earth and one planet within the habitable zone of a late-type dwarf. Although for strategic reasons we chose efficiency over precision in this survey, we have the capability to detect planets down to the Neptune and super-Earth mass range as well as multiple systems, provided that enough data points are made available.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7