Exploring Gaia potential to detect HVSs

Leiden Observatory, Leiden University, PO Box 9513 Leiden, 2300 RA, The Netherlands

Abstract

The current sample of HVSs have small constraining power for Galactic Astrophysics. In this contribution, we show that Gaia will radically change this situation. Our preliminary results suggests an increase of at least an order of magnitude in the detected sample (a few hundreds in total), with a much wider mass range, that goes up to ∼5 M_⊙. Detections will be mostly within a few tens of kpc from the Sun, while the outer halo, where current HVSs were detected, will likely remain out of reach.