J/ApJS/269/41ivo://CDS.VizieR/J/ApJS/269/41doi:10.26093/cds/vizier.22690041CDSChen Y.Xia F.Wang X.Fu Y.Yuan Ye2024-11-06T20:30:30Z2024-03-15T09:51:51ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsradial-velocityvisible-astronomyspectroscopymetallicityorbitsThe LAMOST Low-Resolution Spectroscopic (LAMOST-LRS) Survey provides radial velocities of 10 million stars. These observations can be used to identify new single-lined spectroscopic binaries (SB1s) with their preliminary spectroscopic orbits. First, we perform a statistical {chi}^2^ test on a subsample of LAMOST-LRS stars with velocity observations sufficient for the present work to obtain a set of 6852 radial velocity variables. Subsequently, we discard 399 astrophysical variables through crossmatching with variable catalogs, resulting in 1297 SB1 candidates. Finally, in order to reliably identify SB1s among these SB1 candidates, we employ a combination of The joker, rvfit, and Levenberg-Marquardt algorithms to give the best-fit solutions. An SB1 is identified if its orbital solution satisfies the criteria of the goodness-of-fit statistic (F2)<3.1, the signal significance >10, and the maximum gap in phase (phase_gap_max)<0.3. Our final catalog of SB1s contains 255 systems, 168 of which are newly discovered ones. Cross validation results indicate that the determined orbital periods are consistent with periods of external catalogs within 1{sigma} uncertainties. The period-eccentricity diagram illustrates that a majority of short-period binaries have small eccentricities. Furthermore, in comparison to the general sample, the SB1 catalog exhibits a relatively higher ratio of dwarfs than giants and a slightly lower metallicity.2023ApJS..269...41Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/269/41CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/sb9 : SB9: 9th Catalog of Spectroscopic Binary Orbits (Pourbaix+ 2004-2014)B/gcvs : General Catalog of Variable Stars (Samus+, 2007-2017)II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)V/156 : LAMOST DR7 catalogs (Luo+, 2019)J/A+A/498/627 : Radial velocities of SB with M giant (Famaey+, 2009)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)J/MNRAS/424/1925 : Spectroscopic Binarity of O & B type stars (Chini+, 2012)J/other/Sci/337.444 : RV curves of Galactic massive O stars (Sana+, 2012)J/AJ/150/10 : WOCS. LXVI. Radial velocity survey in M35 (Leiner+, 2015)J/AJ/158/155 : SB cand. from the RAVE & Gaia DR2 surveys (Birko+, 2019)J/other/RAA/19.64 : LAMOST sp. binaries & variable stars (Qian+, 2019)J/ApJS/244/43 : Binary stars param. from LAMOST & Kepler (Zhang+, 2019)J/A+A/635/A155 : Gaia-ESO Survey SB1 catalogue (Merle+, 2020)J/ApJS/249/22 : RV variable stars from LAMOST DR4 (Tian+, 2020)J/A+A/638/A145 : GALAH survey. FGK binary stars (Traven+, 2020)J/other/RAA/21.292 : LAMOST Time-Domain survey, first results (Wang+, 2021)J/A+A/659/A95 : Survey of Surveys. I. Radial velocities (Tsantaki+, 2022)J/ApJS/258/26 : Spectroscopic binaries from LAMOST MRS. I. (Zhang+, 2022)http://www.lamost.org/dr8/v2.0/ : LAMOST DR8 v2.0 home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/269/41https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/269/41http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/269/41https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/269/41https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/269/41http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/269/41GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/269/41/table1 (Summary information for II (SB1 candidates))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/269/41/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/269/41/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/269/41/table1?GETtext/xml+votable180.050000true292.3216839.755328060.005555555555555556Cone search capability for table J/ApJS/269/41/table2 (Summary information for 255 SB1s (Section 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/269/41/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/269/41/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/269/41/table2?GETtext/xml+votable180.050000true39.914398892.043790.0055555555555555565/1074 1080 1085-1087 1130 1173 5998 6001-6003 6006 6081 6084-6086 6873 6/379 453-455 457 460 462 464-466 474-475 4249 4252 4254-4255 4273 4275-4278 4284-4285 4324 4326 4328-4329 4337-4339 4514 4688-4689 4691 4697 4864 4866 4964 4966 14588 14771 14780 14824 14930 14934 14942 15112-15113 15115 15121 15129-15131 15133 17782 17787 17789 23965 23967 23981-23983 23996 23998-23999 24002-24003 24018 24032-24033 24035-24038 24048 24332-24333 24335 24348-24350 27468 27470-27471 27480 27482-27483 27489 27491 27497 27500-27501 27504-27505 27507 27510 27512-27514 27516 284111.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/269/41?format=asciiOpticaldefaultJ/ApJS/269/41/table1Summary information for II (SB1 candidates)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLAMOSTTarget designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharprimaryGaia? Gaia DR3 catalog identifiermeta.id.crossnullableRAJ2000[38/298] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[2/50] Declination (J2000)degpos.eq.dec;meta.mainGmag[9/17]? Gaia DR3 G band magnitudemagphot.mag;em.optdoublenullable[Fe/H][-2.5/1]? LAMOST LASP metallicitylog(Sun)phys.abund.ZdoublenullableTeff[3677/13175]? LAMOST LASP effective temperatureKphys.temperature.effectiveintnullablelogg[1/5]? LAMOST LASP log surface gravitylog(cm.s**-2)phys.gravitydoublenullableSpan[56.9/2939] Time span of the observationdobs.param;obsfloatDelVmax[9/48186] Difference between highest/lowest radial velocitieskm/sphys.veloc;arith.difffloatDelt[0.06/2933] Time difference between highest/lowest radial velocitiesdspect.dopplerVeloc;arith.difffloatRV[-242/2628] Weighted radial velocitykm/sphys.veloc;pos.heliocentricfloatNrv[12/35] Number of radial velocity measurementsmeta.numberintchi2[31/105855626] The {chi}^2^ value from Equation 1stat.valuedoubleF2[3/1706] Value from Equation 2 (G1)stat.fit.paramfloatSB1confirmed SB1 (Table 2)meta.ref.urlcharDR7Display data from LAMOST LRS DR7 (V/156)meta.ref.urlintnullableJ/ApJS/269/41/table2Summary information for 255 SB1s (Section 4)LAMOSTTarget designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.mainchare_omega[0/2] Uncertainty in omegaradstat.errordoublegamma[-209/241] Systemic velocitykm/sphys.velocfloate_gamma[0.04/5] Uncertainty in gammakm/sstat.errorfloatK[3.3/598] Velocity semi-amplitudekm/sphys.velocfloate_K[0.06/20] Uncertainty in Kkm/sstat.errorfloatf(M)[0/11.1] Mass functionsolMassphys.massfloatchi2Orb[0.1/44] Objective function from equation 3stat.fit.chi2floatF2Orb[-5.1/3] Goodness of fits statistic; Section 4.2stat.fit.goodnessfloatSig[10/494] Significance of the solution from Equation 8stat.fit.goodness;stat.fitfloatPGmax[0.07/0.3] Maximum gap in phasetime.intervalfloatNew[0/1] Flag on new SB1s: 1=new or 0=oldmeta.codeintGaiaGaia DR3 catalog identifiermeta.id.crossRAJ2000[38/168] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[2/29] Declination (J2000)degpos.eq.dec;meta.mainGmag[10.27/17] Gaia DR3 G band magnitudemagphot.mag;em.optfloat[Fe/H][-2/0.4]? LAMOST LASP metallicitylog(Sun)phys.abund.ZdoublenullableTeff[4032/11061]? LAMOST LASP effective temperatureKphys.temperature.effectiveintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPer[0.2/829] Orbital perioddtime.perioddoublee_Per[0/7] Uncertainty in Perdstat.errorfloatt0[2455910.3/2458424.4] Reference time; Julian Datedmeta.ref;time.epochdoubleM0[0/6.3] Mean anomaly at t0radsrc.orbital.meanAnomalyfloate_M0[0/2] Uncertainty in M0radstat.errordoublee[0/1] Orbital eccentricitysrc.orbital.eccentricityfloate_e[0/0.2] Uncertainty in estat.errorfloatomega[0/6.3] Argument of pericenterradsrc.orbital.periastronfloatlogg[1.4/5]? LAMOST LASP log surface gravitylog(cm.s**-2)phys.gravitydoublenullableSpan[56/2939] Time span of the observationdobs.param;obsfloatDelVmax[13/1197] Difference between highest/lowest radial velocitieskm/sphys.veloc;arith.difffloatDelt[2/2644] Time difference between highest/lowest radial velocitiesdspect.dopplerVeloc;arith.difffloatRV[-206/240] Weighted radial velocitykm/sphys.veloc;pos.heliocentricfloatNrv[12/34] Number of radial velocity measurementsmeta.numberintchi2[31/33512] The {chi}^2^ value from Equation 1stat.fit.chi2floatF2[3/107] Value from Equation 2 (G1)stat.fit.paramfloat