The HARPS search for southern extra-solar planets XXXVII. Five new long-period giant planets and a system update

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

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

Revista

Título: Astronomy and Astrophysics

Vol. 576

Página Final: A48

ISSN: 0004-6361

Editora: EDP Sciences

Indexação

ISI Web of Knowledge - 17 Citações

Scopus - 20 Citações

Outras Informações

ID Authenticus: P-00A-AG2

DOI: 10.1051/0004-6361/201424965

Abstract (EN): We describe radial-velocity time series obtained by HARPS on the 3.60 m telescope in La Silla (ESO, Chile) over ten years and report the discovery of five new giant exoplanets in distant orbits; these new planets orbit the stars HD 564, HD 30669, HD 108341, and BD -114672. Their periods range from 492 to 1684 days, semi-major axes range from 1.2 to 2.69 AU, and eccentricities range from 0 to 0.85. Their minimum mass ranges from 0.33 to 3.5 M-Jup. We also refine the parameters of two planets announced previously around HD 113538, based on a longer series of measurements. The planets have a period of 663 +/- 8 and 1818 +/- 25 days, orbital eccentricities of 0.14 +/- 0.08 and 0.20 +/- 0.04, and minimum masses of 0.36 +/- 0.04 and 0.93 +/- 0.06 M-Jup. Finally, we report the discovery of a new hot-Jupiter planet around an active star, HD 103720; the planet has a period of 4.5557 +/- 0.0001 days and a minimum mass of 0.62 +/- 0.025 M-Jup. We discuss the fundamental parameters of these systems and limitations due to stellar activity in quiet stars with typical 2 ms(-1) radial velocity precision.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14