J/A+A/626/A127ivo://CDS.VizieR/J/A+A/626/A127doi:10.26093/cds/vizier.36260127CDSJorissen A.Boffin H.M.J.Karinkuzhi D.Van Eck S.Escorza A.,Shetye S.Van Winckel H.2019-07-26T12:27:46Z2019-07-01T07:21:11ZCDS support team

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

cds-question@unistra.frradial-velocitybarium-starss-starsThis paper provides long-period and revised orbits for barium and S stars adding to previously published ones. The sample of barium stars with strong anomalies comprise all such stars present in the Lu et al. catalogue. We find orbital motion for all barium and extrinsic S stars monitored. We obtain the longest period known so far for a spectroscopic binary involving an S star, namely 57 Peg with a period of the order of 100-500yr. We present the mass distribution for the barium stars, which ranges from 1 to 3M_{sun}_, with a tail extending up to 5M_{sun}_ in the case of mild barium stars. This high-mass tail comprises mostly high-metallicity objects ([Fe/H]>=-0.1). Mass functions are compatible with WD companions and we derive their mass distribution which ranges from 0.5 to 1 Msun. Using the initial - final mass relationship established for field WDs, we derived the distribution of the mass ratio q'=M_AGB,ini_/M_Ba_ (where M_AGB,ini_ is the WD progenitor initial mass, i.e., the mass of the system former primary component) which is a proxy for the initial mass ratio. It appears that the distribution of q' is highly non uniform, and significantly different for mild and strong barium stars, the latter being characterized by values mostly in excess of 1.4, whereas mild barium stars occupy the range 1-1.4. We investigate as well the correlation between abundances, orbital periods, metallicities, and masses (barium star and WD companion). The 105 orbits of post-mass-transfer systems presented in this paper pave the way for a comparison with binary-evolution models.2019A&A...626A.127Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/626/A127CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/626/A128 : Main-sequence and subgiant Barium stars (Escorza+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/626/A127https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/626/A127http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/626/A127https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/626/A127https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/626/A127http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/626/A127GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/626/A127/stars (Star positions (from Simbad))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/626/A127/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/626/A127/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/626/A127/stars?GETtext/xml+votable180.050000true43.7962208-4.31663890.0055555555555555566/2194 3953 5569 7338 12440 13176 13244 13521 14889 15374 19284 21310 21690 22218 22233 22462 23423 24689 25631 26957 27106 27752 30110 30659 36839 39847 40528 44219 44693 44899 47050 48125https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/626/A127?format=asciidefaultJ/A+A/626/A127/starsStar positions (from Simbad)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRAJ2000Simbad Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Declination (J2000.0)pos.eq.dec;meta.mainType[Ba S] Barium (Ba) of S (S) starsrc.classcharNamesOther namesmeta.idcharVCShow the Radial Velocity curvesmeta.ref.urlcharJ/A+A/626/A127/table2Radial velocities for 17 barium starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharJDJulian DateJDtime.epochdoubleRVRadial velocity (without zero-point correction)km/sphys.veloc;pos.heliocentricdoublee_RVUncertainty on radial velocitykm/sstat.errorfloatInstSpectrograph (1)meta.id;instrcharOffsetRecommended zero-point offsetkm/sphot.mag;arith.zpfloatJ/A+A/626/A127/table3Radial velocities for 15 S starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharJDJulian DateJDtime.epochdoubleRVRadial velocity (without zero-point correction)km/sphys.veloc;pos.heliocentricdoublee_RVUncertainty on radial velocitykm/sstat.errorfloatInstSpectrograph (1)meta.id;instrcharOffsetRecommended zero-point offsetkm/sphot.mag;arith.zpfloat