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Search for associations containing young stars (SACY). I. Sample and searching method We report results from a high-resolution optical spectroscopic surveyaimed to search for nearby young associations and young stars amongoptical counterparts of ROSAT All-Sky Survey X-ray sources in theSouthern Hemisphere. We selected 1953 late-type (B-V~≥~0.6),potentially young, optical counterparts out of a total of 9574 1RXSsources for follow-up observations. At least one high-resolutionspectrum was obtained for each of 1511 targets. This paper is the firstin a series presenting the results of the SACY survey. Here we describeour sample and our observations. We describe a convergence method in the(UVW) velocity space to find associations. As an example, we discuss thevalidity of this method in the framework of the β Pic Association.
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Osservazione e dati astrometrici
Costellazione: | Vergine |
Ascensione retta: | 13h59m53.41s |
Declinazione: | -22°20'41.3" |
Magnitudine apparente: | 8.754 |
Distanza: | 917.431 parsec |
Moto proprio RA: | -31.1 |
Moto proprio Dec: | -13.4 |
B-T magnitude: | 10.313 |
V-T magnitude: | 8.883 |
Cataloghi e designazioni:
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