10.5281/zenodo.4564792
https://zenodo.org/records/4564792
oai:zenodo.org:4564792
Reylé, Céline
Céline
Reylé
0000-0003-2258-2403
Besançon Observatory, University Bourgogne Franche-Comté
Sanchez Gimenez, Victor
Victor
Sanchez Gimenez
0000-0003-1797-3557
Besançon Observatory, University Bourgogne Franche-Comté
Lagarde, Nadège
Nadège
Lagarde
0000-0003-0108-3859
Besançon Observatory, University Bourgogne Franche-Comté
Ultra-cool dwarf in wide binaries from Gaia
Zenodo
2021
Very low mass stars
Stellar systems, clusters, and associations
Wolk, Scott
Scott
Wolk
2021-02-26
Poster
10.5281/zenodo.4564791
https://zenodo.org/communities/coolstars20half
Creative Commons Attribution 4.0 International
Ultra-cool dwarfs (UCDs) serve as a link between the lowest mass stars and the brown dwarfs. Gaia DR2 revealed thousands of ultra-cool dwarfs not identified as such before. In this work, we searched for companions to those in the Gaia catalogue, from their common proper motions and parallaxes. We found about 1,700 stars in multiple systems out of the original 16,500 sample. Among the companions, there are several tens of young stellar objects and white dwarfs, but also new UCD candidates. Such a sample can be used to better understand the binary properties of UCDs and to better characterize the physics of UCDs thanks to the easier characterization of higher mass companions.