The SpHere INfrared Survey for Exoplanets (SHINE) is a guaranteed-time observing program carried out with SPHERE on the VLT between 2015 and 2024. Our goals are to directly detect young giant exoplanets at very long periods, typically beyond 5 au, to constrain the frequency of substellar companions with masses between 1 and 75 Jupiter masses and semi-major axes between 5 and 300 au, and ultimately to understand their formation and early evolution processes. The sample of stars observed is composed of members of young, nearby associations with stars ranging in spectral type from B to M-type. Based on the survey's detection limits and discoveries, we are using a Bayesian inference tools to compare our observations with the predictions of parametric models of the planet and brown dwarf populations, and those from the advanced core accretion and gravitational instability planet population synthesis. In this talk, we will present the statistical results of our final analysis of a total of 400 young, nearby stars that reveal the existence of two overlapping populations of substellar companions, and the existence of a variation of their occurence with the stellar host mass.
| Subject : | : | Oral presentation |
| Topics | : | Demographics |
| PDF version | : |  PDF version |
