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

• Type: Article in International Scientific Journal
• Date: 2015

Authors

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

Journal

Title: Astronomy and Astrophysics

Vol. 576

Final page: A48

ISSN: 0004-6361

Publisher: EDP Sciences

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 20 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14