A giant planet in the triple system HD132563
S. Desidera, E. Carolo, R. Gratton, A.F. Martinez Fiorenzano, M. Endl,, D. Mesa, M. Barbieri, M. Bonavita, M. Cecconi, R.U. Claudi, R. Cosentino, F., Marzari, S. Scuderi

TL;DR
This study reports the discovery of a giant planet orbiting a star in the triple system HD132563, based on ten years of radial velocity data, highlighting the planet's unique presence in a complex stellar environment.
Contribution
First detection of a giant planet in a triple stellar system using long-term radial velocity monitoring, revealing planetary occurrence in such complex environments.
Findings
Planet HD 132563B has a 1544-day orbit with 1.49 MJup at 2.6 AU.
The primary star HD 132563A is a spectroscopic binary with a period >15 years.
Similar planet occurrence rates in triple systems, wide binaries, and single stars.
Abstract
As part of our radial velocity planet-search survey performed with SARG at TNG, we monitored the components of HD 132563 for ten years. It is a binary system formed by two rather similar solar type stars with a projected separation of 4.1 arcsec, which corresponds to 400 AU at the distance of 96 pc. The two components are moderately metal-poor and the age of the system is about 5 Gyr. We detected RV variations of HD 132563B with period of 1544 days and semi-amplitude of 26 m/s. From the star characteristics and line profile measurements, we infer their Keplerian origin. Therefore HD 132563B turns out to host a planet with a projected mass msini=1.49 MJup at 2.6 AU with a moderately eccentric orbit (e=0.22). The planet around HD 132563B is one of the few that are known in triple stellar systems, as we found that the primary HD 132563A is itself a spectroscopic binary with a period longer…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
