J/A+A/665/A148ivo://CDS.VizieR/J/A+A/665/A148doi:10.26093/cds/vizier.36650148CDSShenar T.Sana H.Mahy L.Maiz Apellaniz J.Crowther P.A.Gromadzki M.,Herrero A.Langer N.Marchant P.Schneider F.R.N.Sen K.Soszynski I.,Toonen S.2022-09-30T23:18:51Z2022-09-23T07:59:07ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsspectroscopic-binary-starsvisible-astronomyspectroscopyWe aim to hunt for massive binaries hosting a black hole companion (OB+BH) and establish the natal mass-ratio distribution of massive stars at the subsolar metallicity environment of the Large Magellanic Cloud (LMC). To this end, we use the shift-and-add grid disentangling technique to characterize the hidden companions in 51 SB1 O-type and evolved B-type binaries in the LMC monitored in the framework of the Tarantula Massive Binary Monitoring (TMBM). We find that, out of the 51 SB1 systems, 43 (84%) are found to have non-degenerate stellar companions, of which 28 are confident detections, and 15 are less certain (SB1: or SB2:). Of these 43 targets, one is found to be a triple (VFTS 64), and two are found to be quadruples (VFTS 120, 702). The remaining eight targets (16%) retain an SB1 classification. Aside from the unambiguous case of VFTS 243, analysed in detailed in a separate paper, we identify two additional OB+BH candidates: VFTS 514 and VFTS 779. Additional black holes may be present in the sample but at a lower probability. Our study firmly establishes a virtually flat natal mass-ratio distribution for O-type stars at LMC metallicity, covering the entire mass-ratio range (0.05<q<1) and periods in the range 0<logP<3[d]. The nature of the OB+BH candidates should be verified through future monitoring, but the frequency of OB+BH candidates is generally in line with recent predictions at LMC metallicity.2022A&A...665A.148Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/665/A148CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/598/A84 : OB-type spectroscopic binaries (Almeida+, 2017)J/A+A/598/A85 : Disentangled spectra of R145 (Shenar+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/665/A148https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/665/A148http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/665/A148https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/665/A148https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/665/A148http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/665/A148GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/665/A148/table1 (VFTS identifiers, previous spectral types, new spectral types from our study, and orbital periods)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A148/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A148/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A148/table1?GETtext/xml+votable180.050000true84.3788186-69.18527690.0055555555555555566/33094https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/665/A148?format=asciiOpticaldefaultJ/A+A/665/A148/table1VFTS identifiers, previous spectral types, new spectral types from our study, and orbital periodsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVFTSVFTS identifiermeta.id;meta.mainintPOrbital perioddtime.perioddoubleTeff1Primary effective temperatureKphys.temperature.effectiveintlogL1Primary luminosity (in log(erg/s))log(1e-07W)phys.luminosityfloatM1SpTPrimary mass from spectral type calibrationsolMassphys.massintSimbadSimbad column added by the CDSmeta.ref.urlcharSpTypeNewNew spectral type (this work)src.spTypechare_POrbital period errordstat.errordoubleNepochsNumber of spectra usedmeta.numberintS/NmeanMean signal-to-noise of spectrastat.snrintfMass functionsolMassphys.massdoublee_fMass function errorsolMassstat.errordoublef1/ftot(V)Primary light contribution in visualphys.luminosity;arith.ratiofloate_M1SpTPrimary mass from spectral type calibration errorsolMassstat.errorintM1evPrimary evolutionary masssolMassphys.massintE_M1evPrimary evolutionary mass error plussolMassstat.error;stat.maxinte_M1evPrimary evolutionary mass error minussolMassstat.errorintM2minSecondary minimum masssolMassphys.massfloatE_M2minSecondary minimum mass error plussolMassstat.error;stat.maxfloate_M2minSecondary minimum mass error minussolMassstat.errorfloatl_logLXLimit flag on logLXmeta.code.errorcharlogLX? X-ray luminosity (in log(erg/s))log(1e-07W)phys.luminosity;em.X-rayfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainSpTypeOldOld spectral type (from Almeida et al., 2017A&A...598A..84A, Cat. J/A+A/598/A84)src.spTypecharJ/A+A/665/A148/table2VFTS identifiers, new spectral types from our study, orbital parameters, mass ratios, probability of the system to host a black hole assuming the companion is a compact object, estimated secondary mass, and individual commentsComCommentsmeta.notechare_omega? Argument of periastron errordegstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVFTSVFTS identifiermeta.id;meta.mainintm_VFTS[AB] Multiplicity index on VFTS (G1)meta.code.multipcharSpTypeNew spectral type (this work)src.spTypecharP? Orbital perioddtime.perioddoublenullablee_P? Orbital period errordstat.errordoublenullableT0? Time of periastron in JD-2400000dsrc.orbital.periastrondoublenullablee_T0? Time of periastron errordstat.errorfloatnullablee? Eccentricitysrc.orbital.eccentricityfloatnullablee_e? Eccentricity errorstat.errorfloatnullableomega? Argument of periastrondegsrc.orbital.periastronfloatnullableK1? Primary radial velocity semi-amplitudekm/sspect.dopplerVelocfloatnullablee_K1? Primary radial velocity semi-amplitude errorkm/sstat.errorfloatnullableK2? Secondary radial velocity semi-amplitudekm/sspect.dopplerVelocfloatnullablee_K2? Secondary radial velocity semi-amplitudekm/sstat.errorfloatnullableq? Mass ratio secondary to primaryphys.massfloatnullablee_q? Mass ratio secondary to primary errorstat.errorfloatnullableP(BH|co)? Black hole probability assuming companion is compact%statintnullableu_P(BH|co)[)] Uncertainty flag on P(BH|co) for values for uncertain SB2 systems (SB2:)meta.code.errorcharM2? Secondary masssolMassphys.massfloatnullablee_M2? Secondary mass errorsolMassstat.errorfloatnullableJ/A+A/665/A148/tabled1Projected rotational velocities and minimum inclinationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVFTSVFTS identifiermeta.id;meta.mainintm_VFTS[AB] Multiplicity index on VFTS (G1)meta.code.multipcharSpTypeNew spectral type (this work)src.spTypecharvsini1? Primary projected rotational velocitykm/sphys.veloc.rotatintnullablevsini2? Secondary projected rotational velocitykm/sphys.veloc.rotatintnullableicrit? Minimum inclinationdegsrc.orbital.inclination;stat.minintnullableJ/A+A/665/A148/listList of spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVFTSVFTS identifiermeta.id;meta.mainintm_VFTS[ABCD] Multiplicity index on VFTS (G1)meta.code.multipcharl2? Secondary light contribution%phys.luminosityfloatnullableK1? Primary radial velocity semi-amplitudekm/sspect.dopplerVelocdoublenullableK2Secondary radial velocity semi-amplitudekm/sspect.dopplerVelocdoubleK3? Third radial velocity semi-amplitudekm/sphys.veloc;src.orbitaldoublenullableK4? Fourth radial velocity semi-amplitudekm/sphys.veloc;src.orbitaldoublenullablespShow the spectrummeta.ref.urlcharFileNameName of the spectrum file in subdirectory spmeta.id;meta.filechar