Volume 460, Number 3, December IV 2006
|Page(s)||695 - 708|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||12 September 2006|
Search for associations containing young stars (SACY)
I. Sample and searching method
Laboratório Nacional de Astrofísica/MCT, Rua Estados Unidos 154, 37504-364 Itajubá, Brazil e-mail: email@example.com
2 Observatório Nacional/MCT, 20921-400 Rio de Janeiro, Brazil
3 European Southern Observatory, Casilla 19001, Santiago 19, Chile
4 Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
Accepted: 12 August 2006
We report results from a high-resolution optical spectroscopic survey aimed to search for nearby young associations and young stars among optical counterparts of ROSAT All-Sky Survey X-ray sources in the Southern Hemisphere. We selected 1953 late-type (), potentially young, optical counterparts out of a total of 9574 1RXS sources for follow-up observations. At least one high-resolution spectrum was obtained for each of 1511 targets. This paper is the first in a series presenting the results of the SACY survey. Here we describe our sample and our observations. We describe a convergence method in the (UVW) velocity space to find associations. As an example, we discuss the validity of this method in the framework of the β Pic Association.
Key words: stars: pre-main sequence / stars: formation / stars: kinematics / stars: rotation / stars: abundances / open clusters and associations: individual: β Pictoris
© ESO, 2006
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.