J/A+AS/126/21ivo://CDS.VizieR/J/A+AS/126/21CDSNordstroem B.Stefanik R.P.Latham D.W.Andersen J.1997-12-09T18:45:58Z1997-12-09T19:45:48ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frdwarf-starsradial-velocityWe present new radial and rotational velocities for 595 nearby early F dwarfs, based on digital spectra cross-correlated with individually optimised synthetic template spectra. The selection of optimum templates, the determination of rotational velocities, and the extraction of velocities from the blended spectra of double-lined spectroscopic binaries are discussed in some detail. We find 170 spectroscopic binaries in the sample and determine orbits for 18 double-lined and 2 single-lined binaries, including some spectroscopic triples. 73 stars are listed with too rapid rotation to yield useful radial velocities (i.e. vsini>120km/s). We discuss the binary frequency in the sample, and the influence of unrecognised binaries on the definition of clean metallicity groups of young F dwarfs and the determination of their kinematical properties.1997A&AS..126...21Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/126/21CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/126/21https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/126/21http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/126/21https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/126/21https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/126/21http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/126/21GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/126/21/table1 (Mean radial velocities, mean errors, and variability indicators for 530 stars with single-lined spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/126/21/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/126/21/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/126/21/table1?GETtext/xml+votable180.050000true2.12583352.3363890.005555555555555556Cone search capability for table J/A+AS/126/21/table2 (Mean radial velocities, luminosity ratios, and other derived parameters for 65 stars with double-lined or composite spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/126/21/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/126/21/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/126/21/table2?GETtext/xml+votable180.050000true13.4037524.9327780.005555555555555556Cone search capability for table J/A+AS/126/21/table5 (Individual radial-velocity observations for the single-lined stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/126/21/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/126/21/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/126/21/table5?GETtext/xml+votable180.050000true2.12583352.3363890.005555555555555556Cone search capability for table J/A+AS/126/21/table6 (Individual radial-velocity observations for the double-lined stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/126/21/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/126/21/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/126/21/table6?GETtext/xml+votable180.050000true13.4037524.9327780.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/126/21?format=asciiOpticaldefaultJ/A+AS/126/21/table1Mean radial velocities, mean errors, and variability indicators for 530 stars with single-lined spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD number of single-lined starmeta.id;meta.mainintprimarym_HDVisual binary component codemeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainnullableTeffEffective temperature (Template spectrum parameter)Kphys.temperature.effectiveintloggSurface gravity (Template spectrum parameter)log(mm.s**-2)phys.gravityintVrotEstimated rotational velocity, v sin ikm/sphys.veloc.rotatfloatNobsNumber of observationsmeta.numberintSpanTime span from first to last observationdtime.intervalint<RV>Mean radial velocitykm/sphys.veloc;pos.heliocentricfloate_<RV>Mean error of mean radial velocitykm/sstat.errorfloatsigExtStandard deviation (external error) of the individual radial velocity observationskm/sstat.stdevfloatsigIntExpected average (internal) error of a single radial velocity as computed by XCSAOkm/sstat.errorfloatsigExt/sigIntRatio of external to internal errorsstat.errorfloatchi2Chi-square of the data set for this starstat.fit.paramdoubleP(chi2)Probability that chi^2 is due to observational errors of a true constant-velocity object%stat.fit.goodnessdouble<R>Average goodness-of-fit parameter R, from XCSAOstat.fit.goodnessfloat<height>Average correlation height, from XCSAOstat.correlationfloatJ/A+AS/126/21/table2Mean radial velocities, luminosity ratios, and other derived parameters for 65 stars with double-lined or composite spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD number of double-lined starmeta.id;meta.mainintprimarym_HDVisual binary component codemeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainnullableTeff1? Synthetic template spectrum effective temperature, for component 1 in spectrumKphys.temperature.effectiveintVrot1? Synthetic template spectrum rotational velocity, for component 1 in spectrumkm/sphys.veloc.rotatintTeff2Synthetic template spectrum effective temperature, for component 2 in spectrumKphys.temperature.effectiveintVrot2Synthetic template spectrum rotational velocity, for component 2 in spectrumkm/sphys.veloc.rotatintAlpha? Luminosity ratio (comp2/comp1) computed with TODCOR (see text)phys.luminosity;arith.ratiofloatNobsNumber of observationsmeta.numberint<V0>Mean (systemic) radial velocity, V0km/sphys.veloc;pos.heliocentricfloate_<V0>Mean error of mean radial velocitykm/sstat.errorfloatSpanTime span from first to last observationdtime.intervalintq? Mass ratio q (comp2/comp1) when available; see paper for methods of computationphys.mass;arith.ratiofloate_q? Mean error of mass ratiostat.errorfloatRemRemark on nature of system (1)meta.notecharJ/A+AS/126/21/table4List of stars which rotate too rapidly for usable radial-velocity measurements with the CfA instrumentsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD number, for fast-rotating stars not measurable with the current CfA instrumentsmeta.id;meta.mainintm_HDVisual binary component codemeta.code.multipcharJ/A+AS/126/21/table5Individual radial-velocity observations for the single-lined starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD number, as in table1meta.id;meta.mainintprimarym_HDVisual binary component codemeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainnullableTel[WTM] Observatory code (1)meta.id;instr.obstycharObsSerial number of observationmeta.idintStarAssociated star identification to serial number of observationmeta.numbercharlog[Fe/H]Metal abundance (always solar = 00 here)log(Sun)phys.abundintTeffEffective temperature (Template spectrum parameter)Kphys.temperature.effectiveintloggSurface gravity (Template spectrum parameter)log(mm.s**-2)phys.gravityintVrotValue of vsini selected for the star (Template spectrum parameter)km/sphys.veloc.rotatintHJDHeliocentric Julian Date of observationdtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVMean error of radial velocity as computed by XCSAOkm/sstat.errorfloatRGoodness-of-fit parameter R, from XCSAOstat.fit.goodnessfloatheightCorrelation peak height, from XCSAOstat.correlationfloatJ/A+AS/126/21/table6Individual radial-velocity observations for the double-lined starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD number, as in table2meta.id;meta.mainintprimarym_HDVisual binary component codemeta.code.multipcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainnullableTeff1Synthetic template spectrum effective temperature for component 1 in spectrumKphys.temperature.effectiveintVrot1Synthetic template spectrum rotational velocity for component 1 in spectrumkm/sphys.veloc.rotatintTeff2Synthetic template spectrum effective temperature for component 2 in spectrumKphys.temperature.effectiveintVrot2Synthetic template spectrum rotational velocity for component 1 in spectrumkm/sphys.veloc.rotatintAlpha? Continuum ratio alpha (comp2/comp1) specified to TODCOR when fixed for all observationsphot.flux;arith.ratiofloatn_Alpha[f] f if continuum ratio alpha (comp2/comp1) was determined by TODCOR for each observationmeta.notecharHJDHeliocentric Julian Date of observationdtime.epochdoubleRV1Radial velocity of component 1km/sphys.veloc;pos.heliocentricfloatRV2Radial velocity of component 2km/sphys.veloc;pos.heliocentricfloatL2/L1Luminosity ratio (comp2/comp1), see abovestat.fit.paramfloatheightCorrelation peak height, from TODCORstat.correlationfloatObsRunning number of observationmeta.idint