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Title:
The HARPS search for southern extra-solar planets. XII. A giant planet orbiting the metal-poor star HD 171028
Authors:
Santos, N. C.; Mayor, M.; Bouchy, F.; Pepe, F.; Queloz, D.; Udry, S.
Affiliation:
AA(Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal ; Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland), AB(Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland), AC(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France), AD(Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland), AE(Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland), AF(Observatoire de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland)
Publication:
Astronomy and Astrophysics, Volume 474, Issue 2, November I 2007, pp.647-651 (A&A Homepage)
Publication Date:
11/2007
Origin:
EDP Sciences
Keywords:
stars: planetary systems, planetary systems: formation, techniques: radial velocity, stars: abundances
DOI:
10.1051/0004-6361:20078129
Bibliographic Code:
2007A&A...474..647S

Abstract

In this paper we present the detection of a 1.8 MJup planet in a 538-day period trajectory orbiting the metal-poor star HD 171028 ([Fe/H] = -0.49). This planet is the first to be discovered in the context of a HARPS program searching for planets around metal-poor stars. Interestingly, HD 171028 is one of the least metal-poor stars in the sample. This discovery is placed in the context of the models of planet formation and evolution.

Based on observations collected at the La Silla Parana Observatory, ESO (Chile) with the HARPS spectrograph at the 3.6 m telescope, under the GTO program 072.C-0488.

Associated Articles

Part 1     Part  2     Part  3     Part  4     Part  6     Part  5     Part  7     Part  8     Part 11     Part  9     Part 10     Part 12    

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