An Aladin-based search for proper-motion companions to young stars in the Local Association, Tucana-Horologium and beta Pictoris

Details An Aladin-based search for proper-motion companions to young stars in the Local Association, Tucana-Horologium and beta Pictoris An Aladin-based search for proper-motion companions to young stars in the Local Association, Tucana-Horologium and beta Pictoris

2012-01-20

arxiv.org/abs/1201.4347v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Proceedings of "Stellar Clusters and Associations: A RIA Conference on Gaia", 23 - 27 May 2011, Granada, Spain

Scientific paper

We have used the Aladin sky atlas of the Virtual Observatory to look for new common proper-motion pairs in three young stellar kinematic groups: Local Association (~10-120 Ma), Tucana-Horologium (~30 Ma) and ? Pictoris (~12 Ma). We have found 9 new and 14 known common proper-motion companions to the 210 investigated stars. With the CAFOS instrument at the 2.2m Calar Alto telescope, we have investigated in detail one of the new pairs, the HD 143809 AB system, which is formed by a bright G0V primary star and a previously unknown young M1.0-1.5Ve star.

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