J/ApJ/952/64ivo://CDS.VizieR/J/ApJ/952/64CDSLin Z.Xu YeHao C.Li Y.Liu D.Bian S.2025-10-30T15:19:33Z2025-10-30T16:15:26ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsob-starssupernova-remnantsproper-motionsvisible-astronomysurveysSince the hypervelocity stars were discovered in the Milky Way, various mechanisms have been proposed to explain these runaway stars. Up to now, however, the dominant ejected mechanism of hypervelocity stars is still unclear. As the largest and closest face-on satellite galaxy of the Milky Way, the Large Magellanic Cloud (LMC) serves as a good target, allowing us to study this issue. Based on the high-precision astrometric parameters provided by Gaia Data Release 3, we researched the proper motions of 3119 massive O-B2-type stars in the LMC and identified 98 (~3%) as having the ability to escape from the LMC, with more than 50% confidence. Furthermore, by investigating the characteristics of the identified massive stars and adopting a regression analysis, we find that the dynamic ejection scenario might be the dominant mechanism of the massive hypervelocity runaway stars in the LMC.2023ApJ...952...64Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/952/64CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/mk : Catalogue of Stellar Spectral Classifications (Skiff, 2009- )III/18 : Stellar Spectra Classified in Morgan-Keenan System (Jaschek+ 1964)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)I/357 : Gaia DR3 Part 3. Non-single stars (Gaia Collaboration, 2022)J/ApJ/671/1708 : Hypervelocity stars. III (Brown+, 2007)J/MNRAS/389/678 : Cat. of extended objects in Magellanic Clouds (Bica+, 2008)J/ApJ/746/15 : Runaway massive stars from R136 (Banerjee+, 2012)J/A+A/558/A134 : 30 Dor luminous stars from VLT-FLAMES (Doran+, 2013)J/A+A/616/A12 : Gaia DR2 sources in GC and dSph (Gaia Collaboration+, 2018)J/A+A/624/A66 : Massive runaway and walkaway stars models (Renzo+, 2019)J/A+A/649/A7 : MC structure and properties (Gaia Collaboration+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/952/64https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/952/64http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/952/64https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/952/64https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/952/64http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/952/64GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/952/64/table1 (Massive OB stars in the Large Magellanic Cloud in this study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/952/64/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/952/64/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/952/64/table1?GETtext/xml+votable180.050000true71.3865331-69.46699360.005555555555555556Cone search capability for table J/ApJ/952/64/table2 (Supernova remnants in the Large Magellanic Cloud in this study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/952/64/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/952/64/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/952/64/table2?GETtext/xml+votable180.050000true72.1096-67.00670.0055555555555555565/8263 8269 8273-8278 8280-8281 6/33046-33047 33051 33072-33073 33075 33085 33089-33091 33116 33128-33129 33133 33136-33138 33140 33801 37546https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/952/64?format=asciiOpticaldefaultJ/ApJ/952/64/table1Massive OB stars in the Large Magellanic Cloud in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqOB[1/3119] Index of massive OB stars in LMCmeta.id;meta.mainintprimaryHVSDisplay the Hypervelocity star candidate data (Tables 3+4)meta.ref.urlcharNameMassive OB star name as published or valid SIMBAD namemeta.idcharGaiaDR3Gaia DR3 source identifiermeta.id.crossSpTypeSpectral type (MK, HD, or other) from the published literaturesrc.spTypecharpmRA[-5.3/7.3] Gaia DR3 Proper motion in RA* directionmas/yrpos.pm;pos.eq.rafloate_pmRA[0.01/0.9] Standard error of proper motion in R.A.* directionmas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-11.6/11.1] Gaia DR3 Proper motion in DEC directionmas/yrpos.pm;pos.eq.decfloate_pmDE[0.01/0.8] Standard error of proper motion in DEC directionmas/yrstat.error;pos.pm;pos.eq.decfloatRefReference of source name and spectral type, ADS bibcodesrc.spTypecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Gaia DR3 (I/355) ICRS at Ep=2000 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia DR3 (I/355) ICRS at Ep=2000 (declination part)degpos.eq.dec;meta.mainJ/ApJ/952/64/table2Supernova remnants in the Large Magellanic Cloud in this studySimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSNR[1/93] Index of SNR in LMCmeta.id;meta.mainintNameName of SNRmeta.idcharRAJ2000[71/87.7] SNR right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-72.1/-64] SNR declination (J2000)degpos.eq.dec;meta.mainDiam[1/600] Diameter taken as the geometric average of the major axisarcsecphys.angSize;stat.meanintpmRA[-0.8/0.6] Proper motion in RA* directionmas/yrpos.pm;pos.eq.rafloatpmDE[-0.6/0.8] Proper motion in DEC directionmas/yrpos.pm;pos.eq.decfloatr_DiamReference for Diam (1)meta.ref;pos.framecharAge[310/120000]? Age of SNRyrstat.snr;time.agefloatnullabler_AgeReference for age, ADS bibcodemeta.ref;pos.framecharJ/ApJ/952/64/hvsHypervelocity star candidates in the Large Magellanic Cloud (Table 3) and regression analysis (Table 4)SeqOB[3/3119] Index of massive OB stars in LMCmeta.idintYpos[-2.5/5.55] Y* direction in face-on LMC's centric framedegpos.cartesian.y;pos.framefloatDist[0.17/5.78] Distance to the LMC center in face-on LMC's centricframedegpos.angDistancefloatpmX[-9.08/6.55] Proper motion in x* directionmas/yrpos.pm;pos.cartesian.xfloate_pmX[0.02/0.76] Standard error on pmXmas/yrstat.errorfloatpmY[-11.98/7.81] Proper motion in y* directionmas/yrpos.pm;pos.cartesian.yfloate_pmY[0.03/0.89] Standard error on on pmYmas/yrstat.errorfloatpmtot[1.09/13.7] Total proper motionmas/yrpos.pmfloate_pmtot[0.02/0.88] Standard error of total proper motionmas/yrstat.errorfloatconf[58/100] Confidence of hypervelocity runaway starstat.fit.goodnessintNmax[0/209] Maximum number of massive OB stars encountered (1)meta.noteinttmax[0/4400000] Corresponding time scale of Nmaxyrtime.scalefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/98] Index of hypervelocity runaway star in LMCmeta.id;meta.mainintXpos[-3.85/2.21] X* direction in face-on LMC's centric framedegpos.cartesian.x;pos.framefloat