J/MNRAS/444/3517ivo://CDS.VizieR/J/MNRAS/444/3517doi:10.26093/cds/vizier.74443517CDSMarsden S.C.Petit P.Jeffers S.V.Morin J.Fares R.Reiners A.,do Nascimento J.-D JrAuriere M.Bouvier J.Carter B.D.Catala C.,Dintrans B.Donati J.-F.Gastine T.Jardine M.Konstantinova-Antova R.,Lanoux J.Lignieres F.Morgenthaler A.Ramirez-Velez J.C.Theado S.,Van Grootel V.(the BCool Collaboration)2024-08-10T20:18:54Z2015-09-23T13:43:22ZCDS support team

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

cds-question@unistra.frsurveysg-starsmagnetic-fieldsWe present the results of a major high-resolution spectropolarimetric BCool project magnetic survey of 170 solar-type stars. Surface magnetic fields were detected on 67 stars, with 21 classified as mature solar-type stars, a result that increases by a factor of 4 the number of mature solar-type stars on which magnetic fields have been observed. In addition, a magnetic field was detected for 3 out of 18 of the subgiant stars surveyed. For the population of K-dwarfs, the mean value of |Bl| (|Bl|_mean_) was also found to be higher (5.7G) than |Bl|_mean_ measured for the G-dwarfs (3.2G) and the F-dwarfs (3.3G). For the sample as a whole, |Bl|_mean_ increases with rotation rate and decreases with age, and the upper envelope for |Bl| correlates well with the observed chromospheric emission. Stars with a chromospheric S-index greater than about 0.2 show a high magnetic field detection rate and so offer optimal targets for future studies. This survey constitutes the most extensive spectropolarimetric survey of cool stars undertaken to date, and suggests that it is feasible to pursue magnetic mapping of a wide range of moderately active solar-type stars to improve our understanding of their surface fields and dynamos.2014MNRAS.444.3517Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/444/3517CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/444/3517https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/444/3517http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/444/3517https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/444/3517https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/444/3517http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/444/3517GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/444/3517/stars (The BCool solar-type star sample: stellar parameters (table1), Least-Sqaere Deconvolution (LSD) profiles (table3), chromospheric activity (table6), and observation summary (tableB1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/444/3517/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/444/3517/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/444/3517/stars?GETtext/xml+votable180.050000true1.234673123.26962860.0055555555555555566/137 254 309 377 400 475 679 684 719 742 819 934 1136 1341 1827 2072 2366 2472 2476 2491 2622 2650 2658 3020 3639 3780 4241 4313 4735 5074 5088 5263 5266 5304 5522 5726 5853 5858 6087 6217 6269 6325 6385 6523 6612 6705 7052 7299 7540 7587 7665 7763 7803 8286 8614 8788 8790 8843 10313 10443 10926 11405 11806 11809 11856 12592 12634 12825 12899 13301 13749 13778 14278 14290 14650 14662 15154 15174 15620 16069 17266 17486 17502 17606 17730 17812 17929 17944 17989 18035 18139 18373 18614 18637 18666 18711 18726 18785 18821 18966 19153 19509 19796 19900 19912 20005 20015 20127 20145 20237 20328 20402 20701 21386 21594 22120 22313 22654 22708 22818 22969 23057 23076 23096-23097 23123 23230 23369 24028 24151 24160 26429 26809 27254 27374 27712 27954 27973 28122 28180 28494 28605 28664 29756 29900 30419 30614 30878 30965 31101 31130 31920 32147 32158 32575 32617 32645 32757 36590 36693 36697 36723 37897 39576 40317 40892 40932 42887https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/444/3517?format=asciidefaultJ/MNRAS/444/3517/starsThe BCool solar-type star sample: stellar parameters (table1), Least-Sqaere Deconvolution (LSD) profiles (table3), chromospheric activity (table6), and observation summary (tableB1)R03? TBL 2007/08 Jun - Feb observing run (6)meta.id;obsintnullableHIP? HIPPARCOS numbermeta.idintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSG[SG ] Subgiant flag, SG: subgiantmeta.codecharBin[B] Binary flag, B: Binarymeta.codecharSPOCS[0/1025]? SPOCS ID numbermeta.idintnullableHD? HD numbermeta.id;meta.mainintnullablem_HDHD suffix (i.e. A, B etc.)meta.code.multipcharNameStar namemeta.idcharSpTypeSpectral type from SIMBADsrc.spTypecharTeff[4085/6522]? Effective temperatureKphys.temperature.effectiveintnullableE_Teff[11/150]? Positive error in TeffKstat.error;stat.maxintnullablee_Teff[11/150]? Negative error in TeffKstat.error;phys.temperature.effectiveintnullablelogg[3.4/4.7]? Surface gravitylog(cm.s**-2)phys.gravityfloatnullableE_logg[0.01/0.1]? Positive error in surface gravitylog(cm.s**-2)stat.error;stat.maxfloatnullablee_logg[0.01/0.1]? Negative error in surface gravitylog(cm.s**-2)stat.errorfloatnullable[M/H][-1.2/0.3]? Metallicitylog(Sun)phys.abund.Zfloatnullablef_[M/H][*] *: Metallicity value from (Fe/H)meta.codecharE_[M/H][0/0.2]? Positive error in metallicitystat.error;stat.maxfloatnullablee_[M/H][0/0.2]? Negative error in metallicitystat.error;phys.abundfloatnullablelog(L)[-1.1/1.2]? Luminositylog(solLum)phys.luminosityfloatnullableE_log(L)[0/0.12]? Positive error in luminositylog(solLum)stat.error;stat.maxfloatnullablee_log(L)[0/0.12]? Negative error in luminositylog(solLum)stat.errorfloatnullableAge[0/12.5]? AgeGyrtime.agefloatnullableE_Age[0.02/9.2]? Positive error in ageGyrstat.error;stat.maxfloatnullablee_Age[0/12]? Negative error in ageGyrstat.error;time.agefloatnullableMass[0.6/2.6]? Star MasssolMassphys.massfloatnullableE_Mass[0.002/0.64]? Positive error in masssolMassstat.error;stat.maxfloatnullablee_Mass[0.002/0.42]? Negative error in masssolMassstat.error;phys.massfloatnullableRad[0.6/4]? Star RadiussolRadphys.size.radiusfloatnullableE_Rad[0/0.2]? Positive error in radiussolRadstat.error;stat.maxfloatnullablee_Rad[0/0.3]? Negative error in radiussolRadstat.errorfloatnullableRcz[0/2]? Radius of convection zonesolRadphys.size.radius;obs.fieldfloatnullableE_Rcz[0/0.13]? Positive error in RczsolRadstat.error;stat.maxfloatnullablee_Rcz[0/0.13]? Negative error in RczsolRadstat.errorfloatnullablevsini[0/55]? Rotational velocitykm/sphys.veloc.rotatfloatnullableE_vsini[0/0.8]? Positive error in vsinikm/sstat.error;stat.maxfloatnullablee_vsini[0/0.8]? Negative error in vsinikm/sstat.error;phys.veloc.rotatfloatnullablelogRo[-1.12/0.5] log(Rossby number)stat.paramfloatE_logRo[0/0.54] Positive error in logRostat.error;stat.maxfloate_logRo[0/0.12] Negative error in logRostat.errorfloatRefsReferences, in refs.dat filemeta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.ref.urlcharObsDateDate of observationtime.epochnullableObsN[1/8] Observation Numbermeta.idintRV[-113/121] Radial velocity this workkm/sphys.veloc;pos.heliocentricfloatRV2[-113/121]? Radial velocity Nidever et al. 2002 (J/ApJS/141/503)km/sphys.veloc;pos.heliocentricfloatnullablee_RV2[0.1/8.9]? Error in RV2km/sstat.errorfloatnullablef_RV2[VF NS] Radial velocity flag (1)meta.codecharSNR[6422/75344] Signal-to-noise of LSD profile (2)stat.snr;spect.line.profileintNlin[6087/14742] Number of lines used for LSD (2)meta.numberintDet?[DMN] Magnetic detection flag: D=definitive, M=marginal, N=no detectionmeta.codecharu_Det?[Da] Non-reliable detection flag (3)meta.code.errorcharFAP[0/0.992] False alarm probabilitystat.fit.goodnessdoubleVmin[-122/115] Minimum velocity used (Eq.(6))phys.velocintVmax[-103/126] Maximum velocity used (Eq.(6))phys.velocintBl[-289/46] Longitudinal magnetic field0.0001Tphys.magFieldfloate_Bl[0.1/17.2] Error in longitudinal magnetic field0.0001Tstat.errorfloatNl[-17/40] Magnetic field measured from Null profile0.0001Tspect.line.profile;obs.fieldfloate_Nl[0.1/18] Error in Null magnetic field0.0001Tstat.errorfloatNobs[1/112] Total number of observationsmeta.numberintNdet[0/101] Number of definite detectionsmeta.numberintNm[0/7] Number of marginal detectionsmeta.numberintNn[0/45] Number of non detectionsmeta.numberintB-V[0.3/1.4] B-V measure from HIPPARCOSphot.color;em.opt.B;em.opt.Vfloatn_B-V[W] "W" if B-V value from Wright et al. 2004 (J/ApJS/152/261)meta.notecharS1[0.1/1.3]? S-index (Ca H&K activity) from Wright et al. 2004 (J/ApJS/152/261)phot.flux;arith.ratiofloatnullableS[0.1/1.5] S-index, this workphot.flux;arith.ratiofloate_S[0/0.14] Error in the S-index from this workstat.errorfloatlogR'HK[-5.3/-4.1] log(R'HK) activity index from individual observationsphot.flux;arith.ratiofloatE_logR'HK[0/0.25] Positive error in logR'HKstat.error;stat.maxfloate_logR'HK[0/0.62] Negative error in logR'HKstat.errorfloatB_logR'HK[-5.3/-3.7] Maximum log(R'HK) in observationsphot.flux;arith.ratio;stat.maxfloatb_logR'HK[-5.3/-4.1] Minimum log(R'HK) in observationsphot.flux;arith.ratio;stat.minfloatAge1[0/14.3] Age from chromospheric activityGyrtime.agefloatE_Age1[0/22.2] Positive error in Age1Gyrstat.error;stat.maxfloate_Age1[0/4.2] Negative error in Age1Gyrstat.errorfloatPer[0.8/65] Rotational period estimated from chromospheric activitydtime.periodfloatE_Per[0/59] Positive error in Perdstat.error;stat.maxfloate_Per[0/6] Negative error in Perdstat.errorfloatCaT[0.61/1.12] Ca Infra-Red Triplet Index (4)spect.indexfloate_CaT[0/0.05] Error in CaTstat.errorfloatb_CaT[0.61/1.1] Minimum CaT in observationsmeta.notefloatB_CaT[0.61/1.2] Maximum CaT in observationsmeta.notefloatHa[0.27/0.4] H{alpha} index (4)spect.index;em.line.Halphafloate_Ha[0/0.015] Error in H{alpha} indexstat.errorfloatb_Ha[0.27/0.40] Minimum H{alpha} indexspect.index;em.line.Halpha;stat.minfloatB_Ha[0.27/0.41] Maximum H{alpha} indexspect.index;em.line.Halpha;stat.maxfloatR01? TBL 2006 Nov - Nov observing run (6)meta.id;obsintnullableR02? CFH 2006 Nov - Dec observing run (6)meta.id;obsintnullableR04? TBL 2007 May - May observing run (6)meta.id;obsintnullableR05? TBL 2007 Jul - Aug observing run (6)meta.id;obsintnullableR06? TBL 2007 Nov - Nov observing run (6)meta.id;obsintnullableR07? CFH 2007 Dec - Dec observing run (6)meta.id;obsintnullableR08? TBL 2007/08 Dec - Jan observing run (6)meta.id;obsintnullableR09? TBL 2008 Jan - Feb observing run (6)meta.id;obsintnullableR10? CFH 2008 Mar - Mar observing run (6)meta.id;obsintnullableR11? TBL 2008 May - May observing run (6)meta.id;obsintnullableR12? CFH 2008 Jun - Jul observing run (6)meta.id;obsintnullableR13? TBL 2008 Jul - Aug observing run (6)meta.id;obsintnullableR14? TBL 2009 Jan - Jan observing run (6)meta.id;obsintnullableR15? TBL 2009 May - Jul observing run (6)meta.id;obsintnullableR16? CFH 2009/10 Sep - Jan observing run (6)meta.id;obsintnullableR17? TBL 2009/10 Dec - Feb observing run (6)meta.id;obsintnullableR18? TBL 2010 Mar - Aug observing run (6)meta.id;obsintnullableR19? TBL 2010/11 Sep - Feb observing run (6)meta.id;obsintnullableR20? CFH 2011 Feb - Jul observing run (6)meta.id;obsintnullableR21? TBL 2011 Mar - Aug observing run (6)meta.id;obsintnullableR22? TBL 2011/12 Oct - Feb observing run (6)meta.id;obsintnullableR23? TBL 2012 Mar - Aug observing run (6)meta.id;obsintnullableR24? TBL 2012/13 Oct - Jan observing run (6)meta.id;obsintnullableR25? TBL 2013 Mar - Aug observing run (6)meta.id;obsintnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableJ/MNRAS/444/3517/refsReferencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorchar