J/MNRAS/513/1429ivo://CDS.VizieR/J/MNRAS/513/1429doi:10.26093/cds/vizier.75131429CDSShultz M.E.Owocki S.P.ud-Doula A.Biswas A.Bohlender D.Chandra P.,Das B.David-Uraz A.Khalack V.Kochukhov O.Landstreet J.D.Leto P.,Monin D.Neiner C.Rivinius T.Wade G.A.2025-10-13T20:12:34Z2022-05-19T08:35:44ZCDS support team

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

cds-question@unistra.frearly-type-starsmagnetic-fieldsNumerous magnetic hot stars exhibit gyrosynchrotron radio emission. The source electrons were previously thought to be accelerated to relativistic velocities in the current sheet formed in the middle magnetosphere by the wind opening magnetic field lines. However, a lack of dependence of radio luminosity on the wind power, and a strong dependence on rotation, has recently challenged this paradigm. We have collected all radio measurements of magnetic early-type stars available in the literature. When constraints on the magnetic field and/or the rotational period are not available, we have determined these using previously unpublished spectropolarimetric and photometric data. The result is the largest sample of magnetic stars with radio observations that has yet been analysed: 131 stars with rotational and magnetic constraints, of which 50 are radio-bright. We confirm an obvious dependence of gyrosynchrotron radiation on rotation, and furthermore find that accounting for rotation neatly separates stars with and without detected radio emission. There is a close correlation between H{alpha} emission strength and radio luminosity. These factors suggest that radio emission may be explained by the same mechanism responsible for H{alpha} emission from centrifugal magnetospheres, i.e. centrifugal breakout (CBO), however, while the H{alpha}-emitting magnetosphere probes the cool plasma before breakout, radio emission is a consequence of electrons accelerated in centrifugally driven magnetic reconnection.2022MNRAS.513.1429Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/513/1429CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/513/1429https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/513/1429http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/513/1429https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/513/1429https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/513/1429http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/513/1429GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/513/1429/tablea1 (Stellar, rotational, magnetic and radio parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/513/1429/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/513/1429/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/513/1429/tablea1?GETtext/xml+votable180.050000true98.02556674.87093140.005555555555555556Cone search capability for table J/MNRAS/513/1429/list (List of stars with magnetic measurements in tables A2 and A3)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/513/1429/list?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/513/1429/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/513/1429/list?GETtext/xml+votable180.050000true53.035868348.02348030.0055555555555555566/351 463 666 842 1287 1313 1768 2746 2970 5805 6759 7487 7705 8983 9048 9589 10000 10783 11279 12651 12766 13206 14238 14343 14443 14513 14567 14718 14843 14922 14952 15151 15223 15523 15663 16074 16104 16131 16144 16186 17888 20782 20797 21389 21433 21436 21438-21439 21997 22056 22249 22769 22805 22807 22815 22837 22849-22850 22854 22859 22861 22863 22880 22884 22887 22907 22981 23076 23637 23819 23860 23945 24189 24519 24562 25964 26057 26381 26855 28711 28751 29463 29555 30083 30434 30563 31063 31710 31716 31824 31940 32096 35676 35709 35756 36119 36298 39202 39205 39716 39869 39877 39899 42487 42617 42619 42670 42673 42903 42932 42934 42944 42948 42967 42984 42988 42994 43420 43460 43531 44043 44136 44307 44310 44316-44317 44352 44354 44371 44378 44651 44892 47539 47824 48072 48562https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/513/1429?format=asciidefaultJ/MNRAS/513/1429/tablea1Stellar, rotational, magnetic and radio parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarName of starmeta.id;meta.maincharlogLBolometric luminositylog(solLum)phys.luminosityfloate_logLLuminosity errorlog(solLum)stat.errorfloatTeffEffective temperaturekKphys.temperature.effectivefloate_TeffEffective temperature errorkKstat.error;phys.temperature.effectivefloatr_logLReference for stellar parametersmeta.refintMassMasssolMassphys.massfloate_MassMass errorsolMassstat.error;phys.massfloatvsini? Projected rotational velocitykm/sphys.veloc.rotatintnullabler_vsini? Reference for vsinimeta.refintnullableProt? Rotation perioddtime.perioddoublenullabler_ProtReference for rotation periodmeta.ref;pos.framecharbeta? Magnetic obliquity angledegphys.magField;pos.angDistanceintnullableE_beta? Upper uncertainty in obliquity angledegstat.error;stat.maxintnullablee_beta? Lower uncertainty in obliquity angledegstat.errorintnullablel_Bd[LL UL] Limit indicator for magnetic field (LL=lower limit, UL=upper limit)meta.code.errorcharBdSurface magnetic dipole strengthkGphys.magFieldfloatE_Bd? Upper uncertainty in surface dipole strengthkGstat.error;stat.maxfloatnullablee_Bd? Lower uncertainty in surface dipole strengthkGstat.errorfloatnullabler_BdReference for magnetic parametersmeta.ref;pos.framecharl_Lrad[UL] Detection flag for radio data (UL=upper limit)meta.code.errorcharLradRadio luminositysolLumphys.luminosity;em.radiofloate_Lrad? Radio luminosity uncertaintysolLumstat.errorfloatnullabler_LradReference for radio datameta.ref;pos.framecharSimbadNameSimbad column added by the CDSmeta.idcharnullable_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.mainJ/MNRAS/513/1429/listList of stars with magnetic measurements in tables A2 and A3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarName of starmeta.id;meta.maincharNNumber of magnetic measurementsmeta.numberintFileNameName of the table with measurementsmeta.id;meta.tablecharSimbadSimbad column added by the CDSmeta.ref.urlchar_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.mainJ/MNRAS/513/1429/tablea2Magnetic measurements with ESPaDOnS and NarvalrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarName of starmeta.id;meta.maincharInstInstrument (E=ESPaDOnS,N=Narval)meta.id;instrcharHJDHeliocentric Julian Datedtime.epochdoubleBzLongitudinal magnetic fieldGphys.magFieldfloate_BzLongitudinal magnetic field errorGstat.errorfloatDFVStokes V detection flag (1)meta.codecharNzNull fieldGphys.magFieldfloate_NzNull field errorGstat.errorfloatDFNNull detection flag (1)meta.codecharJ/MNRAS/513/1429/tablea3Magnetic measurements with DAOrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarName of starmeta.id;meta.maincharHJDHeliocentric Julian Datedtime.epochdoubleBzLongitudinal magnetic fieldGphys.magFieldinte_BzLongitudinal magnetic field errorGstat.errorintJ/MNRAS/513/1429/refsReferences for Table 1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference key for references in Table 1meta.ref;pos.frameintBibCodeADS/CDS bibcodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar