J/ApJ/457/L99ivo://CDS.VizieR/J/ApJ/457/L99doi:10.26093/cds/vizier.14579099CDSBaliunas S.Sokoloff D.Soon W.2018-05-28T16:03:55Z2015-07-09T13:58:13ZCDS support team

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

cds-question@unistra.frg-starsvisible-astronomynarrow-band-photometryWe find a significant correlation between the magnetic and rotational moments for a sample of 112 lower main-sequence stars. The rotational moment is calculated from measurements of the rotation period in most of the stars (not from the projected rotational velocity inferred from Doppler broadening). The magnetic moment is computed from a database of homogeneous measurements of the mean level of Ca II H and K emission fluxes sampled for most of the stars over an interval of 25yr. The slope connecting the logarithm of the magnetic moment and the logarithm of the rotational moment is about +0.5-0.6, with a Pearson correlation coefficient of about +0.9. The scatter of points from the mean relation has a component that is natural and caused by decade-long surface variability.1996ApJ...457L..99Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/457/L99CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/159 : Ca II H and K Measurements Made at MWO (Duncan+ 1991)J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)J/A+A/552/A114 : Sun chromospheric CaII-HK emission (Shapiro+, 2013)J/A+A/552/A27 : Stellar activity and kinematics of FGK stars (Murgas+, 2013)J/A+A/551/L8 : Chromospheric activity of field stars (Pace, 2013)J/A+A/547/A106 : Li abundances in the FGK dwarfs (Mishenina+, 2012)J/A+A/531/A8 : Activity indexes and velocities for 890 stars (Jenkins+, 2011)J/AZh/88/1217 : Solar-like activity of low-mass stars (Kasova+, 2011)J/ApJ/743/48 : Stellar rotation periods & X-ray luminosities (Wright+, 2011)J/ApJ/725/875 : Chromospheric activity for CPS stars (Isaacson+, 2010)J/A+A/520/A79 : FGK stars chromospheric activity (Martinez-Arnaiz+, 2010)J/A+A/493/1099 : CaII HK emission in rapidly rotating stars (Schroeder+, 2009)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/A+A/483/903 : Mt Wilson index for main sequence F-K stars (Buccino+, 2008)J/A+A/469/309 : Chromospheric activity in late-type stars (Cincunegui+, 2007)J/AJ/133/2524 : Spectra of young nearby stars (White+, 2007)J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004)J/A+A/397/147 : Activity-rotation relationship in stars (Pizzolato+ 2003)J/A+AS/146/103 : CaII H+K to CaII IRT echelle spectra (Montes+, 2000)J/AJ/116/1922 : CaII H and K filter photometry III. (Anthony-Twarog+, 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/457/L99https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/457/L99http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/457/L99https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/457/L99https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/457/L99http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/457/L99GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/457/L99/table1 (*Time-averaged CaII fluxes and rotation periods for Wilson survey stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/457/L99/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/457/L99/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/457/L99/table1?GETtext/xml+votable180.050000true6/137 254 400 684 1247 1603 1875 2650 3639 4468 4591 5013 5074 5088 5413 5420 5670 5718 7763 8716 8790 8843 9072 9403 9835 10375 11128 11225 11856 12592 12825 12944 13301 13474 14419 14459 14522 16069 16678 16679 17137 17219 17425 17606 17847 17918 18067 18139 19237 19312 19547 19912 20145 20278 21177 22157 22300 22708 22818 22841 23230 23342 23575 24151 24160 24924 25444 25869 25966 26521 27006 27581 27973 27980 28180 28494 28605 28664 29196 30176 30429 30529 30576 30614 30665 30965 31072 31073 31101 31130 31132 31416 31478 31751 32067 32357 32552 32757 36664 36693 36697 36762 40823 40932https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/457/L99?format=asciiOpticaldefaultJ/ApJ/457/L99/table1*Time-averaged CaII fluxes and rotation periods for Wilson survey starsTYC3? Tycho-2 name, field 3meta.id.part;meta.mainintnullableHIP? HIP numbermeta.idintnullableSpTMK Spectral Type (4)src.spTypecharTYC2? Tycho-2 name, field 2meta.id.part;meta.mainintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameHD name (or Sun)meta.idcharB-V[0.4/1.6] B-V color indexmagphot.color;em.opt.B;em.opt.Vfloatlog<R'HK>[-5.5/-4.1] R'_HK_ chromospheric activity (1)phot.flux;arith.ratiofloat<Prot>[1/71] Measured rotation period unless flaggeddtime.periodintn_<Prot>[n] Rotation from CaII/Rossby relation (2)meta.notecharRAJ2000? Tycho-2 right ascension (J2000) (3)degpos.eq.ra;meta.mainnullableDEJ2000? Tycho-2 declination (J2000) (3)degpos.eq.dec;meta.mainnullableTYC1? Tycho-2 name, field 1meta.id.part;meta.mainintnullabler_SpTBibcode for Spectral Type (4)meta.ref;pos.framecharMKCatDisplay data from Skiff, 2009-2014, Cat. B/mk, within 3"meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar