J/A+A/695/A198ivo://CDS.VizieR/J/A+A/695/A198doi:10.26093/cds/vizier.36950198CDSBestenlehner J.M.Crowther Paul A.Hawcroft C.Sana H.Tramper F.,Vink J.S.Brands S.A.Sander A.A.C.the XShootU collaboration2025-05-21T20:02:30Z2025-03-21T10:09:52ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsob-starsmorgan-keenan-classificationeffective-temperatureradial-velocitystellar-massesThe proximity and low dust extinction of the Magellanic Clouds provides an ideal environment for metal-poor massive stars to be studied in detail. The Hubble Space Telescope ULLYSES initiative has provided exquisite ultraviolet spectroscopy of a large sample of OB stars in the Magellanic Clouds, and its legacy value has been enhanced through the acquisition of optical VLT/XShooter spectroscopy (XShootU). We aim to determine the spectral types and physical properties of 122 LMC and 103 SMC OB stars observed via XShootU. Physical parameters are required for these to serve as templates in spectral libraries of metal-poor massive stars. We also aim to identify double-lined binaries and OeBe stars for which analysis requires non- standard treatment. We have applied a pipeline designed to analyse large spectroscopic samples of hot luminous stars to XShootU spectroscopic datasets, together with grids of synthetic model spectra computed with the non-Local Thermodynamic Equilibrium atmospheric code FASTWIND at LMC and SMC metallicities. We have determined physical and wind properties of 97 LMC and 77 SMC massive stars, ranging from O2 to B9 subtypes, representing the majority of the XShootU OB sample (OeBe and candidate SB2 systems are excluded). Results are broadly in agreement with previous optical spectroscopic studies, with evolutionary masses spanning 12-117M_{sun}_ in the LMC and 11-74M_{sun}_ in the SMC. We have determined a revised Teff - spectral type calibration for Magellanic Cloud stars, identified stars with peculiar radial velocities, and compared wind properties of high luminosity O stars with dense winds, revealing ~0.27dex higher wind momenta of LMC stars with respect to SMC counterparts. Incorporating the recent empirical metallicity dependence of Z^0.22^ for wind velocities, this suggests a mass-loss dependence of Z^0.5^ for luminous O stars. Studies incorporating ultraviolet mass-loss diagnostics are required for OB stars with weak winds and/or low luminosities.2025A&A...695A.198Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A198CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/675/A154 : X-Shooting ULLYSES. I. Project Description (Vink+, 2023)J/A+A/688/A104 : X-Shooting ULLYSES. II. Data Release 1 (Sana+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/695/A198https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/695/A198http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/695/A198https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/695/A198https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/695/A198http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/695/A198GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/695/A198/tablea1 (Physical parameters of single+SB1 targets in the SMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/695/A198/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/695/A198/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/695/A198/tablea1?GETtext/xml+votable180.050000true14.753171389-72.1744974440.005555555555555556Cone search capability for table J/A+A/695/A198/tablea2 (Physical parameters of single+SB1 targets in the LMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/695/A198/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/695/A198/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/695/A198/tablea2?GETtext/xml+votable180.050000true84.060993333-67.655323750.005555555555555556Cone search capability for table J/A+A/695/A198/tablea3 (Excluded SMC targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/695/A198/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/695/A198/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/695/A198/tablea3?GETtext/xml+votable180.050000true15.175325-71.5200756390.005555555555555556Cone search capability for table J/A+A/695/A198/tablea4 (Excluded LMC targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/695/A198/tablea4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/695/A198/tablea4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/695/A198/tablea4?GETtext/xml+votable180.050000true76.169934167-70.2595831390.0055555555555555565/8274-8275 8280 6/32958 33047 33051-33054 33076-33077 33079 33091-33092 33094-33095 33106-33107 33112-33113 33115-33116 33124 33126-33128 33294-33295 33297-33299 33304 33306 33316-33317 33328 33330https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/695/A198?format=asciiOpticaldefaultJ/A+A/695/A198/tablea1Physical parameters of single+SB1 targets in the SMCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintE_Mspec? Error on Mspec (upper value) (G4)solMassstat.error;stat.maxfloatnullablef_E_Mspec[)] Note on E_Mspec (G2)meta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSpTypelitSpectral type from literaturesrc.spTypecharr_SpTypelitReference to literature spectral type, in refs.dat filemeta.ref;pos.framecharSpTypenewNew/updated spectral typesrc.spTypecharRV? Radial velocitykm/sphys.veloc;pos.heliocentricintnullableTeff? Effective temperaturekKphys.temperature.effectivefloatnullableE_Teff? Error of Teff (upper value)kKstat.error;stat.maxfloatnullablee_Teff[]? Error of Teff (lower value)kKstat.error;phys.temperature.effectivefloatnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablef_logg[)] Note on logg (G2)meta.codecharE_logg? Error on logg (upper value)log(cm.s**-2)stat.error;stat.maxfloatnullablef_E_logg[)] Note on E_logg (G2)meta.codechare_logg[]? Error on logg (lower value)log(cm.s**-2)stat.errorfloatnullablef_e_logg[)] Note on e_logg (G2)meta.codecharRstar? Stellar radiussolRadphys.size.radiusfloatnullablef_Rstar[)] Note on Rstar (G2)meta.codecharE_Rstar? Error on Rstar (upper value)solRadstat.error;stat.maxfloatnullablef_E_Rstar[)] Note on E_Rstar (G2)meta.codechare_Rstar[]? Error on Rstar (lower value)solRadstat.errorfloatnullablef_e_Rstar[)] Note on e_Rstar (G2)meta.codecharlogL? Luminositylog(solLum)phys.luminosityfloatnullablef_logL[)] Note on logL (G2)meta.codecharE_logL? Error on logL (upper value)log(solLum)stat.error;stat.maxfloatnullablef_E_logL[)] Note on E_logL (G2)meta.codechare_logL[]? Error on logL (lower value)log(solLum)stat.errorfloatnullablef_e_logL[)] Note on e_logL (G2)meta.codecharY? He abundances in mass fractionphys.abund.YfloatnullableE_Y? Error on Y (upper value)stat.error;stat.maxfloatnullablee_Y[]? Error on Y (lower value)stat.error;pos.cartesian.yfloatnullableN? N abundances: log(N/H)+12phys.abundfloatnullableE_N? Error on N (upper value)stat.error;stat.maxchare_N[]? Error on N (lower value)stat.errorfloatnullablevsini? Projected rotational velocitieskm/sphys.veloc.rotat;phys.mol.rotationintnullableE_vsini? Error on ve_sin_i (upper value)km/sstat.error;stat.maxintnullablee_vsini[]? Error on ve_sin_i (lower value)km/sstat.error;phys.veloc.rotatintnullablelogQH? Predicted ionizing photons below 912{AA}log(s**-1)phys.luminosityfloatnullablef_logQH[)] Note on logQH (G2)meta.codecharlogQHeI? Predicted ionizing photons below 504{AA}log(s**-1)phys.luminosityfloatnullablef_logQHeI[)] Note on logQHeI (G2)meta.codecharNote1Notes (G3)meta.notecharloggc? Corrected gravity from centrifugal forcelog(cm.s**-2)phys.gravityfloatnullablef_loggc[)] Note on loggc (G2)meta.codecharE_loggc? Error on logg_c (upper value)log(cm.s**-2)stat.error;stat.maxfloatnullablef_E_loggc[)] Note on E_loggc (G2)meta.codechare_loggc[]? Error on logg_c (lower value)log(cm.s**-2)stat.errorfloatnullablef_e_loggc[)] Note on e_loggc (G2)meta.codecharMspec? Spectroscopic stellar mass (G4)solMassphys.massfloatnullablef_Mspec[)] Note on Mspec (G2)meta.codechare_Mspec[]? Error on Mspec (lower value) (G4)solMassstat.errorfloatnullablef_e_Mspec[)] Note on e_Mspec (G2)meta.codecharMevol? Evolutionary stellar mass (G5)solMassphys.massfloatnullablef_MevolNote on Mevol (G5)meta.codecharE_Mevol? Error on Mevol (upper value) (G5)solMassstat.error;stat.maxfloatnullablef_E_MevolNote on E_Mevol (G5)meta.codechare_Mevol[]? Error on Mevol (lower value) (G5)solMassstat.errorfloatnullablef_e_MevolNot on e_Mevol (G5)meta.codecharMinit? Initial stellar mass (G5)solMassphys.massfloatnullablef_MinitNote on Minit (G5)meta.codecharE_Minit? Error on Minit (upper value) (G5)solMassstat.error;stat.maxfloatnullablef_E_MinitNote on E_Minit (G5)meta.codechare_Minit[]? Error on Minit (lower value) (G5)solMassstat.errorfloatnullablef_e_MinitNote on e_Minit (G5)meta.codecharAge? Stellar age (G5)Myrtime.agefloatnullablef_AgeNote on Agemeta.codecharE_Age? Error on Age (upper value) (G5)Myrstat.error;stat.maxfloatnullablef_E_AgeNote on E_Agemeta.codechare_Age[]? Error on Age (lower value) (G5)Myrstat.error;time.agefloatnullablef_e_AgeNote on e_Agemeta.codecharlogQ? Wind strength parameter Q, in Msun/yr/Rsun^3/2^.km^-3/2^.s^3/2 units (G6)stat.fit.paramfloatnullablef_logQ[)] Note on logQ (G6)meta.codecharE_logQ? Error on logQ (upper value), in Msun/yr/Rsun^3/2^.km^-3/2^.s^3/2 units (G6)stat.error;stat.maxfloatnullablef_E_logQ[)] Note on E_logQ (G6)meta.codechare_logQ[]? Error on logQ (lower value), in Msun/yr/Rsun^3/2^.km^-3/2^.s^3/2 units (G6)stat.errorfloatnullablef_e_logQ[)] Note on e_logQ (G6)meta.codecharvinfty? Terminal velocitykm/sphys.velocintnullablee_vinfty[]? Error on vinftykm/sstat.errorintnullableLineLine used to determine vinfty (G7)meta.id;spect.linecharrLineReference for vinfty (G8)meta.bibcharlogMdot? Mass-loss rate (G6)log(solMass.yr**-1)arith.ratefloatnullablef_logMdot[)] Note on logMdot (G6)meta.codecharE_logMdot? Error on logMdot (upper value) (G6)log(solMass.yr**-1)stat.error;stat.maxfloatnullablef_E_logMdot[)] Note on E_logMdot (G6)meta.codechare_logMdot[]? Error on logMdot (lower value) (G6)log(solMass.yr**-1)stat.errorfloatnullablef_e_logMdot[)] Note on e_logMdot (G6)meta.codecharlogDmom? Reduced wind momentum (G6)log(g.cm.s**-2)stat.fit.paramfloatnullablef_logDmom[)] Note on logDmom (G6)meta.codecharE_logDmom? Error on logDmom (upper value) (G6)log(g.cm.s**-2)stat.error;stat.maxfloatnullablef_E_logDmom[)] Note on E_logDmom (G6)meta.codechare_logDmom[]? Error on logDmom (lower value) (G6)log(g.cm.s**-2)stat.errorfloatnullablef_e_logDmom[)] Note on e_logDmom (G6)meta.codecharAV? Total extinctionmagphys.absorptionfloatnullableNote2? Notes (G9)meta.noteintnullableAliasTarget name and aliasmeta.id;meta.maincharSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/A+A/695/A198/tablea2Physical parameters of single+SB1 targets in the LMCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainRV? Radial velocitykm/sphys.veloc;pos.heliocentricintnullableTeff? Effective temperaturekKphys.temperature.effectivefloatnullableE_Teff? Error of Teff (upper value)kKstat.error;stat.maxfloatnullablee_Teff[]? Error of Teff (lower value)kKstat.error;phys.temperature.effectivefloatnullablelogg? Surface gravity (G2)log(cm.s**-2)phys.gravityfloatnullableE_logg? Error on logg (upper value)log(cm.s**-2)stat.error;stat.maxfloatnullablee_logg[]? Error on logg (lower value)log(cm.s**-2)stat.errorfloatnullableRstar? Stellar radius (G2)solRadphys.size.radiusfloatnullableE_Rstar? Error on Rstar (upper value) (G2)solRadstat.error;stat.maxfloatnullablee_Rstar[]? Error on Rstar (lower value) (G2)solRadstat.errorfloatnullablelogL? Luminosity (G2)log(solLum)phys.luminosityfloatnullableE_logL? Error on logL (upper value) (G2)log(solLum)stat.error;stat.maxfloatnullablee_logL[]? Error on logL (lower value) (G2)log(solLum)stat.errorfloatnullableY? He abundances in mass fractionphys.abund.YfloatnullableE_Y? Error on Y (upper value)stat.error;stat.maxfloatnullablee_Y[]? Error on Y (lower value)stat.error;pos.cartesian.yfloatnullableN? N abundances: log(N/H)+12phys.abundfloatnullableE_N? Error on N (upper value)stat.error;stat.maxfloatnullablee_N[]? Error on N (lower value)stat.errorfloatnullablevsini? Projected rotational velocitieskm/sphys.veloc.rotat;phys.mol.rotationintnullableE_vsini? Error on ve_sin_i (upper value)km/sstat.error;stat.maxintnullablee_vsini[]? Error on ve_sin_i (lower value)km/sstat.error;phys.veloc.rotatintnullablelogQH? Predicted ionizing photons below 912{AA} (G2)log(s**-1)phys.luminosityfloatnullablelogQHeI? Predicted ionizing photons below 504{AA} (G2)log(s**-1)phys.luminosityfloatnullableloggc? Corrected gravity from centrifugal force (G2)log(cm.s**-2)phys.gravityfloatnullablen_logQHeI[u]meta.notecharE_loggc? Error on logg_c (upper value) (G2)log(cm.s**-2)stat.error;stat.maxfloatnullablee_loggc[]? Error on logg_c (lower value) (G2)log(cm.s**-2)stat.errorfloatnullableMspec? Spectroscopic stellar mass (G4)solMassphys.massfloatnullableE_Mspec? Error on Mspec (upper value) (G4)solMassstat.error;stat.maxfloatnullablee_Mspec[]? Error on Mspec (lower value) (G4)solMassstat.errorfloatnullableMevol? Evolutionary stellar mass (G5)solMassphys.massfloatnullableE_Mevol? Error on Mevol (upper value) (G5)solMassstat.error;stat.maxfloatnullablee_Mevol[]? Error on Mevol (lower value) (G5)solMassstat.errorfloatnullableMinit? Initial stellar mass (G5)solMassphys.massfloatnullableE_Minit? Error on Minit (upper value) (G5)solMassstat.error;stat.maxfloatnullablee_Minit[]? Error on Minit (lower value) (G5)solMassstat.errorfloatnullableAge? Stellar age (G5)Myrtime.agefloatnullableE_Age? Error on Age (upper value) (G5)Myrstat.error;stat.maxfloatnullablee_Age[]? Error on Age (lower value) (G5)Myrstat.error;time.agefloatnullablelogQ? Wind strength parameter Q, in Msun/yr/Rsun^3/2^.km^-3/2^.s^3/2 units (G6)stat.fit.paramfloatnullableE_logQ? Error on logQ (upper value), in Msun/yr/Rsun^3/2^.km^-3/2^.s^3/2 units (G6)stat.error;stat.maxfloatnullablee_logQ[]? Error on logQ (lower value), in Msun/yr/Rsun^3/2^.km^-3/2^.s^3/2 units (G6)stat.errorfloatnullablevinfty? Terminal velocitykm/sphys.velocintnullablee_vinfty? Error on vinftykm/sstat.errorintnullablelogMdot? Mass-loss rate (G6)log(solMass.yr**-1)arith.ratefloatnullableE_logMdot? Error on logMdot (upper value) (G6)log(solMass.yr**-1)stat.error;stat.maxfloatnullablee_logMdot[]? Error on logMdot (lower value) (G6)log(solMass.yr**-1)stat.errorfloatnullablelogDmom? Reduced wind momentum (G6)stat.fit.paramfloatnullableE_logDmom? Error on logDmom (upper value) (G6)stat.error;stat.maxfloatnullablee_logDmom[]? Error on logDmom (lower value) (G6)stat.errorfloatnullableAV? Total extinctionmagphys.absorptionfloatnullableNote2? Notes (G9)meta.noteintnullableAliasTarget name and aliasmeta.id;meta.maincharSpTypelitSpectral type from literaturesrc.spTypecharr_SpTypelitReference to literature spectral type, in refs.dat filesmeta.ref;pos.framecharSpTypenewNew/updated spectral typesrc.spTypecharf_Teff[)] Note on Teff (G2)meta.codecharf_E_Teff[)] Note on E_Teff (G2)meta.codecharf_e_Teff[)] Note on e_Teff (G2)meta.codecharf_logg[)] Note on logg (G2)meta.codecharf_E_logg[)] Note on E_logg (G2)meta.codecharf_e_logg[)] Note on e_logg (G2)meta.codecharf_Rstar[)] Note on Rstar (G2)meta.codecharf_E_Rstar[)] Note on E_Rstar (G2)meta.codecharf_e_Rstar[)] Note on e_Rstar (G2)meta.codecharf_logL[)] Note on logL (G2)meta.codecharf_E_logL[)] Note on E_logL (G2)meta.codecharf_e_logL[)] Note on e_logL (G2)meta.codecharf_Y[)] Note on Y (G2)meta.codecharf_E_Y[)] Note on E_Y (G2)meta.codecharf_e_Y[)] Note on e_Y (G2)meta.codecharf_logQH[)] Note on logQH (G2)meta.codecharf_logQHeI[)] Note on logQHeI (G2)meta.codecharNote1Notes (G3)meta.notecharf_loggc[)] Note on loggc (G2)meta.codecharf_E_loggc[)] Note on E_loggc (G2)meta.codecharf_e_loggc[)] Note on e_loggc (G2)meta.codecharf_Mspec[)] Note on Mspec (G2)meta.codecharf_E_Mspec[)] Note on E_Mspec (G2)meta.codecharf_e_Mspec[)] Note on e_Mspec (G2)meta.codecharf_MevolNote on Mevol (G5)meta.codecharf_E_MevolNote on E_Mevol (G5)meta.codecharf_e_MevolNote on e_Mevol (G5)meta.codecharf_MinitNote on Minit (G5)meta.codecharf_E_MinitNote on E_Minit (G5)meta.codecharf_e_MinitNote on e_Minit (G5)meta.codecharf_AgeNote on Age (G5)meta.codecharf_E_AgeNote on E_Age (G5)meta.codecharf_e_AgeNote on e_Age (G5)meta.codecharf_logQ[)] Note on logQ (G6)meta.codecharf_E_logQ[)] Note on E_logQ (G6)meta.codecharf_e_logQ[)] Note on e_logQ (G6)meta.codecharLineLine used to determine v_infty (G7)meta.id;spect.linecharrLineReference for vinfty (G8)meta.bibcharf_logMdot[)] Note on logMdot (G6)meta.codecharf_E_logMdot[)] Note on E_logMdot (G6)meta.codecharf_e_logMdot[)] Note on e_logMdot (G6)meta.codecharf_logDmom[)] Note on logDmom (G6)meta.codecharf_E_logDmom[)] Note on E_logDmom (G6)meta.codecharf_e_logDmom[)] Note on e_logDmom (G6)meta.codecharSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/A+A/695/A198/tablea3Excluded SMC targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainAliasTarget name and aliasmeta.id;meta.maincharSpTypelitSpectral type from literature (G10)src.spTypecharr_SpTypelitReference to literature spectral type, in refs.dat filemeta.ref;pos.framecharSpTypenew? New/updated spectral typesrc.spTypecharNote? Notes (G10)meta.notecharr_Note? Reference for Note, in refs.dat filemeta.ref;pos.framecharSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/A+A/695/A198/tablea4Excluded LMC targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainAliasTarget name and aliasmeta.id;meta.maincharSpTypelitSpectral type from literature (G10)src.spTypecharr_SpTypelitReference to literature spectral type, in refs.dat filemeta.ref;pos.framecharSpTypenew? New/updated spectral typesrc.spTypecharNote? Notes (G10)meta.notecharr_Note? Reference for Note, in refs.dat filemeta.ref;pos.framecharSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/A+A/695/A198/refsReferencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorchar