J/A+A/574/A13ivo://CDS.VizieR/J/A+A/574/A13doi:10.26093/cds/vizier.35740013CDSEvans C.J.Kennedy M.B.Dufton P.L.Howarth I.D.Walborn N.R.,Markova N.Clark J.S.de Mink S.E.de Koter A.Dunstall P.R.,Henault-Brunet V.Maiz Apellaniz J.McEvoy C.M.Sana H.Simon-Diaz S.,Taylor W.D.Vink J.S.2017-12-05T05:09:57Z2015-03-24T14:45:13ZCDS support team

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

cds-question@unistra.frb-starsmorgan-keenan-classificationradial-velocityWe present spectral classifications for 438 B-type stars observed as part of the VLT-FLAMES Tarantula Survey (VFTS) in the 30 Doradus region of the Large Magellanic Cloud. Radial velocities are provided for 307 apparently single stars, and for 99 targets with radial-velocity variations which are consistent with them being spectroscopic binaries. We investigate the spatial distribution of the radial velocities across the 30 Dor region, and use the results to identify candidate runaway stars. Excluding potential runaways and members of two older clusters in the survey region (SL639 and Hodge301), we determine a systemic velocity for 30 Dor of 271.6+/-12.2km/s from 273 presumed single stars. Employing a 3{sigma} criterion we identify nine candidate runaway stars (2.9% of the single stars with radial-velocity estimates). The projected rotational velocities of the candidate runaways appear to be significantly different to those of the full B-type sample, with a strong preference for either large (>=345km/s) or small (<=65km/s) rotational velocities. Of the candidate runaways, VFTS358 (classified B0.5: V) has the largest differential radial velocity (-106.9+/-16.2km/s), and a preliminary atmospheric analysis finds a significantly enriched nitrogen abundance of 12+log(N/H)> 8.5. Combined with a large rotational velocity (v_e_sini=345+/-22km/s), this is suggestive of past binary interaction for this star.2015A&A...574A..13Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/574/A13CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/530/A108 : VLT-FLAMES Tarantula Survey (Evans+, 2011)J/A+A/550/A107 : RV catalogue of O stars in 30 Doradus (Sana+, 2013)J/A+A/550/A108 : DIB in VLT-FLAMES Tarantula Survey (van Loon+, 2013)J/A+A/550/A109 : VLT-FLAMES Tarantula Survey: vsini measures (Dufton+ 2013)J/A+A/564/L7 : VLT-FLAMES Tarantula Survey: VFTS 822 (Kalari+, 2014)J/A+A/560/A29 : O-stars in VLT-FLAMES Tarantula Survey (Ramirez-Agudelo+ 2013)J/A+A/564/A39 : VLTS. OVz stars in 30 Dor (Sabin-Sanjulian+, 2014)J/A+A/564/A40 : VFTS. O-type stellar content of 30 Dor (Walborn+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/574/A13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/574/A13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/574/A13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/574/A13https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/574/A13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/574/A13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/574/A13/table7 (Spectral classifications and radial velocities for B-type stars in the VFTS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/574/A13/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/574/A13/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/574/A13/table7?GETtext/xml+votable180.050000true84.22245833-69.138413890.0055555555555555566/33094-330953.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/574/A13?format=asciiOpticaldefaultJ/A+A/574/A13/table3Rest wavelengths used to estimate radial velocities for the narrow- and broad-lined stars (Sets 1 and 2, respectively)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSet[1/2] Set numbermeta.id;meta.mainintIonIon (HeI, CII or SiIII)phys.atmol.ionStagecharlambda[4000/5000] Wavelength {lambda}, in {AA} (1)0.1nmem.wlfloatDV[-3.5/2.8] Average difference between the velocity estimates for each line and the final velocity for each starkm/sphys.veloc;arith.difffloate_DVrms uncertainty on DVkm/sstat.errorfloatn_DVGiraffe setting (LR02 or LR03)meta.notecharJ/A+A/574/A13/table7Spectral classifications and radial velocities for B-type stars in the VFTSVNumber of individual line velocitiesmeta.ref.urlintnullableVFTS[1/891] VFTS identifiermeta.id;meta.mainintprimarySpTypeSpectral typesrc.spTypecharMult[X-] Binary status (from Dunstall et al., in prep.)meta.code.multipcharHaH{alpha} morphology code (1)meta.codecharVmag[11.7/17.2]? V magnitude (2)magphot.mag;em.opt.VfloatnullableB-V? B-V colour index (2)magphot.color;em.opt.B;em.opt.VfloatnullableRV[164/333]? Estimated radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RV? Standard deviation of RVkm/sstat.errorfloatnullablen_RV[123B] Method/lines used to estimate RV (3)meta.notecharANameAlternative identifier(s) used in the literaturemeta.id;instr.setupcharPapIDisplay the Paper I (Evans et al., 2011, Cat. J/A+A/530/A108) datameta.ref.urlcharComPrevious classifications and other relevant comments (4)meta.noteSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from the VLT-FLAMES Tarantula Survey (Evans et al. 2011, J/A+A/530/A108) (right ascension part)degpos.eq.ra;meta.main_DEPosition from the VLT-FLAMES Tarantula Survey (Evans et al. 2011, J/A+A/530/A108) (declination part)degpos.eq.dec;meta.mainJ/A+A/574/A13/tablea1Line-by-line radial-velocity estimates for single stars using the Set 1 absorption linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVFTS[1/891] VFTS identifiermeta.id;meta.mainintV4121? HeI {lambda}4121{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4267? CII {lambda}4267{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4438? HeI {lambda}4438{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4553-2? SiIII {lambda}4553{AA} line radial velocity (LR02)km/sspect.dopplerVelocfloatnullableV4553-3? SiIII {lambda}4553{AA} line radial velocity (LR03)km/sspect.dopplerVelocfloatnullableV4568? SiIII {lambda}4568{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4575? SiIII {lambda}4575{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4713? HeI {lambda}4713{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableRVWeighted mean velocity for each star (from Eq.(1), weigths are central depths)km/sspect.dopplerVeloc;stat.meanfloate_RVStandard deviation for RV (from Eq.(2), weighted by the central depths)km/sstat.errorfloato_RVNumber of lines used in calculation of RV and e_RVmeta.numberintJ/A+A/574/A13/tablea2Line-by-line radial-velocity estimates for single stars using the Set 2 absorption linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVFTS[1/891] VFTS identifiermeta.id;meta.mainintV4009? HeI {lambda}4009{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4144? HeI {lambda}4144{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4388? HeI {lambda}4388{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4713? HeI {lambda}4713{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4922? HeI {lambda}4922{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableRVWeighted mean velocity for each star (from Eq.(1), weigths are central depths)km/sspect.dopplerVeloc;stat.meanfloate_RVStandard deviation for RV (from Eq.(2), weighted by the central depths)km/sstat.errorfloato_RVNumber of lines used in calculation of RV and e_RVmeta.numberintJ/A+A/574/A13/tablea3Line-by-line radial-velocity estimates for single-lined binaries using absorption lines in the LR02 observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVFTS[1/891] VFTS identifiermeta.id;meta.mainintMJDModified Julian Date of the co-added observations used for these measurements (1)dtime.epochintV4009? HeI {lambda}4009{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4144? HeI {lambda}4144{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4169? HeI {lambda}4169{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4267? CII {lambda}4267{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4388? HeI {lambda}4388{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4438? HeI {lambda}4438{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV4553? SiIII {lambda}4553{AA} line radial velocitykm/sspect.dopplerVelocfloatnullableV1Weighted mean (single-epoch) velocity for each star (from Eq. (1), weigths are central depths)km/sphys.veloc;pos.heliocentricfloate_V1Standard deviation for V1 (from Eq.(2), weighted by the central depths)km/sstat.errorfloato_V1Number of lines used in calculation of V1 and e_V1meta.numberintRV? Estimated mean vr calculated from the multi-epoch measurements from Dunstall et al. (in prep.)km/sphys.veloc;pos.heliocentricfloatnullablee_RV? Standard deviation of estimated mean RVkm/sstat.errorfloatnullables_RV? Maximum difference in the radial velocity estimates between the available epochskm/sspect.dopplerVeloc;arith.diff;stat.maxfloatnullable