Search for Associations Containing Young stars J/A+A/460/695 ivo://CDS.VizieR/J/A+A/460/695 doi:10.26093/cds/vizier.34600695 CDS Torres C.A.O. Quast G.R. da Silva L. de la Reza R. Melo C.H.F.,Sterzik M. 2018-02-14T07:05:18Z 2007-03-16T13:11:52Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr late-type-stars infrared-photometry visible-astronomy Wide-band photometry radial-velocity x-ray-sources 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 (<IX/10> and <IX/29>, X-ray sources in the Southern Hemisphere. We selected 1953 late-type (B-V>=0.6), 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 Beta Pic Association. 2006A&A...460..695T https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/460/695 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999) IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/460/695 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/460/695 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/460/695 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/460/695 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/460/695 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/460/695 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/460/695/stars (Astrometric, spectroscopic and photometric data of the stars observed (tables 3 and 4 of the paper)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/460/695/stars? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/460/695/stars? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/460/695/stars? 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Should Not be used for identification. meta.record int Ref Reference number or letter meta.id;meta.main char BibCode BibCode meta.bib.bibcode char Aut Author's name meta.bib.author char Com Comments meta.note char
J/A+A/460/695/stars Astrometric, spectroscopic and photometric data of the stars observed (tables 3 and 4 of the paper) r_Plx Source of Plx (8) meta.ref;pos.frame char B-V ? Johnson B-V colour index mag phot.color;em.opt.B;em.opt.V float nullable recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int S meta.note char Seq Running number meta.id int 1RXS 1RXS (<IX/10>,<IX/29>) designation (1) meta.id;meta.main char Name Hipparcos (<I/239>), Tycho-2 (<II/259>) or UCAC2 (<I/289>) identification (2) meta.id char OName Other identification (HD, DM, other) (3) meta.id char RAJ2000 Right ascension (J2000.0) pos.eq.ra;meta.main DEJ2000 Declination (J2000.0) pos.eq.dec;meta.main pmRA Proper motion in RA (pmRA*cosDE) mas/yr pos.pm;pos.eq.ra float pmDE Proper motion in DE (pmDE) mas/yr pos.pm;pos.eq.dec float r_pmRA Source of proper motions (4) meta.ref;pos.pm;pos.eq.ra char HRV Heliocentric radial velocity (5) km/s spect.dopplerVeloc;pos.heliocentric float f_HRV [:] Quality flag for RV meta.code char e_HRV ? rms of the observed RV km/s stat.error float nullable Nobs ? Number of observations (6) meta.number int nullable f_Nobs [*] *: RV value comes from the literature (7) meta.code char r_HRV ? Source of radial velocity (8) meta.ref;pos.frame char n_HRV [D,SB1234 ?] Multiplicity flag (9) meta.note char Sep ? Angular separation of visual binaries (10) arcsec pos.angDistance float nullable dV ? Magnitude difference of components (11) mag phot.mag;arith.diff float nullable u_dV [?] Uncertainty flag on dV meta.code.error char vsini ? Rotational velocity km/s phys.veloc.rotat float nullable e_vsini ? rms uncertainty on vsini km/s stat.error;phys.veloc.rotat float nullable r_vsini ? Source of vsini (8) meta.ref char Plx ? Trigonometric parallax mas pos.parallax.trig float nullable e_Plx ? Standard error in Plx mas stat.error;pos.parallax float nullable Vmag Johnson V magnitude mag phot.mag;em.opt.V float f_Vmag [V] Quality flag indicating variability (12) meta.code char V-I ? Cousins V-I colour index mag phot.color;em.opt.V;em.opt.I float nullable r_Vmag Source of photometry (13) meta.ref;pos.frame char n_Vmag [*] *: photometry corrected for companions (14) meta.note char SpType MK spectral type src.spType char EWLi ? LiI equivalent width in milli-Angstroms (15) 0.1pm spect.line.eqWidth int nullable f_EWLi [:?] Quality flag for EWLi meta.code char EWHa ? H{alpha} line emission in Angstroms 0.1nm spect.line.eqWidth float nullable r_EWLi Source of spectral information (16) meta.ref;pos.frame char Tycho2 Display the Tycho-2 data (Cat. I/259) meta.ref.url char UCAC2 Display the UCAC2 data (Cat. I/289) meta.ref.url char Simbad Simbad column added by the CDS meta.ref.url char