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SACY - a Search for Associations Containing Young stars

Carlos A. O. Torres·Germano R. Quast·Ramiro de la Reza·Licio da Silva·Claudio H. F. Melo·Michael Sterzik
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Abstract

The scientific goal of the SACY (Search for Associations Containing Young-stars) was to identify possible associations of stars younger than the Pleiades Association among optical counterparts of the ROSAT X-ray bright sources. High-resolution spectra for possible optical counterparts later than G0 belonging to HIPPARCOS and/or TYCHO-2 catalogs were obtained in order to assess both the youth and the spatial motion of each target. More than 1000 ROSAT sources were observed, covering a large area in the Southern Hemisphere. The newly identified young stars present a patchy distribution in UVW and XYZ, revealing the existence of huge nearby young associations. Here we present the associations identified in this survey.

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Carlos A. O. Torres, Germano R. Quast, Ramiro de la Reza, Licio da Silva, Claudio H. F. Melo, Michael Sterzik. 2003-06-12. SACY - a Search for Associations Containing Young stars. https://doi.org/10.1007/1-4020-2600-5_9

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