J/MNRAS/514/4300ivo://CDS.VizieR/J/MNRAS/514/4300doi:10.26093/cds/vizier.75144300CDSBrown E.L.Jeffers S.V.Marsden S.C.Morin J.Boro Saikia S.Petit P.,Jardine M.M.See V.Vidotto A.A.Mengel M.W.Dahlkemper M.N.,(the Bcool Collaboration)2024-08-22T20:15:48Z2022-11-13T16:58:22ZCDS support team

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

cds-question@unistra.frlate-type-starsmagnetic-fieldsradial-velocityvisible-astronomySpectropolarimetric data allow for simultaneous monitoring of stellar chromospheric logR'HK activity and the surface-averaged longitudinal magnetic field, Bl, giving the opportunity to probe the relationship between large-scale stellar magnetic fields and chromospheric manifestations of magnetism. We present logR'HK and\or Bl measurements for 954 mid-F to mid-M stars derived from spectropolarimetric observations contained within the PolarBase database. Our magnetically active sample complements previous stellar activity surveys that focus on inactive planet-search targets. We find a positive correlation between mean logR'HK and mean log |Bl|, but for G stars the relationship may undergo a change between logR'HK~-4.4 and -4.8. The mean logR'HK shows a similar change with respect to the logR'HK variability amplitude for intermediately active G stars. We also combine our results with archival chromospheric activity data and published observations of large-scale magnetic field geometries derived using Zeeman-Doppler Imaging. The chromospheric activity data indicate a slight under-density of late-F to early-K stars with -4.75<=logR'HK<=-4.5 . This is not as prominent as the original Vaughan-Preston gap, and we do not detect similar under-populated regions in the distributions of the mean |Bl|, or the Bl and logR'HK variability amplitudes. Chromospheric activity, activity variability, and toroidal field strength decrease on the main sequence as rotation slows. For G stars, the disappearance of dominant toroidal fields occurs at a similar chromospheric activity level as the change in the relationships between chromospheric activity, activity variability, and mean field strength.2022MNRAS.514.4300Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/514/4300CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://polarbase.irap.omp.eu : PolarBase database home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/514/4300https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/514/4300http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/514/4300https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/514/4300https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/514/4300http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/514/4300GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/514/4300/tables (Chromospheric S-index and surface averaged longitudinal field strengths (tables 1 and 3 of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/514/4300/tables?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/514/4300/tables?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/514/4300/tables?GETtext/xml+votable180.050000true126.1458925-3.75124250.0055555555555555566/49 60 100 129 137 154 248 254 261 273 282-283 309 311 322 325 336 341-342 348 373 377 431 455 461 463 472 474-475 483 485 489 493 496 679 684 706 712 719 742 748 776 814 819 871 890 917 934 940 1024 1029-1030 1032 1042 1048 1050 1073-1075 1077 1114 1118 1132 1159 1168 1170-1171 1235 1292 1341 1530 1577 1597 1694 1762 1779 1805 1827 1873 1875 1909 1938 1997 2072 2110 2133 2152 2254 2366 2416 2472 2476 2491 2497 2515 2622 2658 2691 2702 2737 2747 2789 3020 3031 3036 3093 3095 3102 3118 3121 3208 3238 3344 3372 3509 3639 3663 3682 3697 3715 3780 3922 3970 3979 4145 4241 4268 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32656 32743 32757 32765 33442 34810 35802 35968 36487 36564 36578 36590 36650 36654 36664 36697 36742 36745 36759 36784 36813 38164 38382 38687 38788 38800 38834 39576 40021 40101 40242 40268 40317 40442 40692 40739 40784 40892 40932 42429 42610 42714 42845 42887 42931 42970 42981 43704 44025 44243 44257 44317 44360-44362 44378-44379 44389 44398 44439 44542 44792 44853 44879 44887 45032 46776 46938 46982 47742 48061 48065 48105 48274 48455 48652 48821 48905 49028 49042 49114https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/514/4300?format=asciiOpticaldefaultJ/MNRAS/514/4300/tablesChromospheric S-index and surface averaged longitudinal field strengths (tables 1 and 3 of the paper)SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameMain IDmeta.id;meta.maincharSpTypeSpectral typesrc.spTypecharr_SpTypeSpectral type referencemeta.ref;pos.framecharGaiaDR2GAIA DR2 IDmeta.idcharLi[yes no] Detection of strong lithium absorption linesmeta.codecharBinary[Binary ] Is this a binary/multiple starmeta.codecharBl-blend[yes no] Does the Bl include contributions from more than one binary componentmeta.codecharB-VB-V colour indexphot.color;em.opt.B;em.opt.VdoubleTeffEffective temperatureKphys.temperature.effectivedoubleloggSurface gravitylog(cm.s**-2)phys.gravitydoubleLumLuminositysolLumphys.luminositydoubleRVMean radial velocitykm/sphys.veloc;pos.heliocentricdoubles_RVRadial velocity standard deviationkm/sstat.stdev;spect.dopplerVelocfloatFWHMMean LSD line profile full-width at half-maximumkm/sspect.line.widthfloato_SmeanNumber of S-index observationsmeta.numberintSmean? Mean chromospheric S-indexphot.flux;arith.ratiodoublenullableSmin? Minimum chromospheric S-indexphot.flux;arith.ratiodoublenullableSmax? Maximum chromospheric S-indexphot.flux;arith.ratiodoublenullablelogRhkmean? Mean logR'HKphot.flux;arith.ratiodoublenullablelogRhkrange? Peak-to-peak range of logR'HKinstr.bandwidthdoublenullableo_BlavgNumber of Bl observationsmeta.numberintBlavg? Mean surface-averaged magnetic field strength, BlGphys.magField;phys.atmol.collStrengthdoublenullablee_Blavg? Error in the mean BlGstat.errordoublenullableBlrange? Peak-to-peak Bl rangeGinstr.bandwidthdoublenullableBlNavg? Mean Bl measured from the Null LSD profileGphys.magFielddoublenullablee_BlNavg? Error in the mean Bl measured from the Null LSD profileGstat.errordoublenullables_BlNavg? Average uncertainty in BlN measurementsGstat.error;stat.meandoublenullable_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.main