Search for Associations Containing Young stars (Torres+, 2006)

Details Search for Associations Containing Young stars (Torres+, 2006) Search for Associations Containing Young stars (Torres+, 2006)

Nov 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ycat..34600695t&link_type=abstract

VizieR On-line Data Catalog: J/A+A/460/695. Originally published in: 2006A&A...460..695T

Other

Stars: Nearby, Stars: Late-Type, Photometry: Ubvri, Radial Velocities, Rotational Velocities, Equivalent Widths Spectral Types, X-Ray Sources

Scientific paper

The SACY sample is defined by Hipparcos () and Tycho-2 () stars within an error radius of 2.6 times the positional error of the ROSAT All-Sky Bright Source Catalogue (1RXS, ). The used cut-off (B-V=0.6), corresponding approximately to a G0 dwarf, is near the hottest stars where the strength of the LiI line can be used as an youth indicator. We excluded all Hipparcos stars having Mv<2.0. In Table 1 of the paper we give the northern boundary limits of the survey. In addition to the 1511 stars observed at least once we add 115 with data taken from the literature to complement the sample.
Most of the spectroscopic observations (~70%) were performed with the FEROS spectrograph at the 1.5m/ESO telescope at La Silla between January 1999 and September 2002 (ON-ESO agreement and ESO program identification 67.C-0123). Two more runs (ESO program identifications 072.C-0393 and 077.C-0138) were carried out at the 2.2m/ESO telescope. Another set of data (~30%) was collected at the coude spectrograph attached to 1.60m telescope at the Observatorio rio do Pico dos Dias (OPD), LNA, Brazil. Some spectra are a re-analysis of the ones taken for the PDS program. A few observations were collected using the CORALIE attached to the Swiss Euler Telescope at La Silla.
UBV(RI)c photometry for part of the sample was obtained using FOTRAP at the 0.60m Zeiss telescope of the OPD. When a star was not observed photometrically by us we tried to obtain some useful photometric data in the Hipparcos and Tycho Catalogues or in the available literature in the SIMBAD. For multiple stars, magnitudes and colors were corrected in order to take into account the presence of the companion.
(3 data files).

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