2003/06/27 by D. Naef, M. Mayor, S. G. Korzennik +10 · 3 citations
Physics and Astronomy · #Astro and Planetary Science #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:20031341
published as Astron.Astrophys.410:1051-1054,2003 · 4 pages, 2 figures, accepted for publication in A&A
arxiv created 2003/06/27 · openalex publication_date 2003/10/20 · arxiv updated 2009/12/01 · openalex created_date 2022/08/19 · openalex updated_date 2026/07/31
We present radial-velocity measurements obtained with the ELODIE and AFOE spectrographs for GJ 777 A (HD 190360), a metal-rich ([Fe/H] = 0.25) nearby (d = 15.9 pc) star in a stellar binary system. A long-period low radial-velocity amplitude variation is detected revealing the presence of a Jovian planetary companion. Some of the orbital elements remain weakly constrained because of the smallness of the signal compared to our instrumental precision. The detailed orbital shape is therefore not well established. We present our best fitted orbital solution: an eccentric (e = 0.48) 10.7–year orbit. The minimum mass of the companion is 1.33 MJup.