J/ApJ/743/48ivo://CDS.VizieR/J/ApJ/743/48doi:10.26093/cds/vizier.17430048CDSWright N.J.Drake J.J.Mamajek E.E.Henry G.W.2020-04-03T08:15:41Z2012-02-09T15:57:35ZCDS support team

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

cds-question@unistra.fropen-star-clusterslate-type-starsWe present a sample of 824 solar and late-type stars with X-ray luminosities and rotation periods. This is used to study the relationship between rotation and stellar activity and derive a new estimate of the convective turnover time. From an unbiased subset of this sample the power law slope of the unsaturated regime, L_X_/L_{bol}_{propto}Ro^{beta}^, is fit as {beta}=-2.70+/-0.13. This is inconsistent with the canonical {beta}=-2 slope to a confidence of 5{sigma}, and argues for an additional term in the dynamo number equation. From a simple scaling analysis this implies {Delta}{Omega}/{Omega}{propto}{Omega}^0.7^, i.e. the differential rotation of solar-type stars gradually declines as they spin down. Super-saturation is observed for the fastest rotators in our sample and its parametric dependencies are explored. Significant correlations are found with both the corotation radius and the excess polar updraft, the latter theory providing a stronger dependence and being supported by other observations. We estimate mass-dependent empirical thresholds for saturation and super- saturation and map out three regimes of coronal emission. Late F-type stars are shown never to pass through the saturated regime, passing straight from super-saturated to unsaturated X-ray emission. The theoretical threshold for coronal stripping is shown to be significantly different from the empirical saturation threshold (Ro<0.13), suggesting it is not responsible. Instead we suggest that a different dynamo configuration is at work in stars with saturated coronal emission. This is supported by a correlation between the empirical saturation threshold and the time when stars transition between convective and interface sequences in rotational spin-down models.2011ApJ...743...48Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/743/48CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/743/48https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/743/48http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/743/48https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/743/48https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/743/48http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/743/48GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/743/48/catalog (Activity-rotation properties for 824 stars -- updated version by the author)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/743/48/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/743/48/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/743/48/catalog?GETtext/xml+votable180.050000true5/118 784 6/49 137 254 331 336 340 341 342 348 350 358 368 373 383 456 461 462 463 470 485 487 496 546 684 701 781 838 847 850 861 867 965 983 989 999 1030 1045 1048 1052 1058 1066 1067 1079 1099 1105 1122 1133 1146 1148 1159 1165 1181 1199 1205 1212 1234 1255 1264 1273 1511 1556 1559 1560 1569 1571 1572 1599 1605 1611 1613 1646 1665 1723 1768 1770 1771 1774 1819 1853 1873 1875 1880 1890 1948 2072 2298 2321 2335 2366 2422 2468 2494 2498 2534 2596 2597 2616 2651 2652 2660 2671 2755 2756 2783 2793 2800 2816 2858 2952 2974 3093 3094 3095 3140 3144 3383 3639 3697 4128 4444 4468 4591 4696 4698 4699 4720 4721 4773 5074 5095 5108 5119 5319 5331 5387 5399 5413 5420 5438 5452 5487 5504 5532 5534 5670 5743 5787 5788 5802 5819 5822 5850 5853 5872 5895 5915 5917 5927 6231 6245 6295 6385 6410 6522 6543 6561 6599 6606 6660 6725 6726 6836 6847 6850 6853 7189 7202 7264 7763 8224 8357 8440 8627 8790 8843 9086 9167 9168 9200 9281 9293 9294 9311 9316 9332 9445 9485 9570 9597 9599 9616 9682 9683 9687 9689 9712 9753 9759 9770 9773 9797 9831 9844 9856 9902 9905 9912 9923 9926 9929 9954 10005 10016 10027 10028 10225 10303 10375 10481 10490 10538 10771 10792 10893 10905 10912 10928 11015 11128 11510 11856 12092 12341 12343 12454 12464 12592 12676 12683 12792 12924 12944 12983 13096 13122 13301 13451 13495 13499 13536 13541 13547 13548 13625 13713 13728 13743 13748 13750 13763 13792 13795 13802 13855 13946 14038 14208 14266 14772 14781 14865 14871 14904 14921 14935 14978 15007 15009 15010 15021 15028 15062 15227 15703 16041 16164 17019 17058 17124 17137 17219 17541 17552 18139 18295 18553 18623 19912 20071 20145 20332 20716 21050 21177 21386 21956 22146 22148 22289 22461 22510 22709 22807 22873 22878 22964 23011 23094 23140 23230 23342 23429 23444 23457 23479 23490 23492 23497 23499 23501 23504 23511 23512 23515 23525 23527 23532 23533 23535 23537 23538 23539 23544 23545 23547 23548 23550 23564 23661 23731 23878 23887 23892 23895 24053 24102 24151 24160 24201 24207 24227 24234 24237 24242 24312 24313 24541 24924 25192 25405 25444 25521 25793 26133 26279 26327 26521 26555 26761 26997 27201 27395 27762 27973 27980 28123 28180 28341 28395 28605 28646 28955 29196 29978 30176 30540 30965 31087 31101 31104 31130 31132 31425 31478 31667 31751 32067 32247 32431 32500 32505 32606 32617 32618 32630 32633 32650 32660 32676 32683 32699 32700 32715 32732 32743 32757 33116 33937 34074 35150 35950 36057 36483 36487 36511 36577 36664 36697 36713 36762 37229 37230 37231 37240 37242 37316 37317 37419 37592 37593 37787 37788 37790 37791 38168 38247 38430 38551 39181 39183 40739 40784 41591 41763 42290 42420 42683 44226 44228 44316 45269 46598 46925 46987 48230 48263 48274 48394 48905https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/743/48?format=asciidefaultJ/ApJ/743/48/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharJ/ApJ/743/48/catalogActivity-rotation properties for 824 stars -- updated version by the authorProtRotation period of the stardtime.periodfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameDefault source name (1)meta.id;meta.maincharHD? Henry Draper catalog number (Cat. III/135)meta.idintnullableHIP? Hipparcos catalog number (Cat. I/239)meta.idintnullableGJCatalog of nearby stars source name (Cat. V/70)meta.idcharGCVS? General Catalog of Variable Stars source name (Cat. B/gcvs)meta.idchar2MASS2MASS source name (HHMMSSss+DDMMSSs; J2000 - Cat. II/246)meta.idcharRAJ2000? Right Ascension J2000pos.eq.ra;meta.mainnullableDEJ2000? Declination J2000pos.eq.dec;meta.mainnullableCluster? Name of open cluster that star is part of (or 'Field')meta.idcharDist? Distance to star (2)pcpos.distance;pos.heliocentricfloatnullableVmag? Observed V magnitude of starmagphot.mag;em.opt.VfloatnullableV-KDereddened V-K colour of star (3)magphot.color;em.opt.V;em.IR.KfloatSpT? Spectral type of starsrc.spTypecharr_SpT? Reference for spectral type, in refs.dat filemeta.ref;pos.framecharlogLxLogarithm of the intrinsic X-ray luminosity of the starlog(1e-07W)phys.luminosity;em.X-rayfloatr_logLxReference for X-ray luminosity in refs.dat filemeta.ref;pos.framecharr_ProtReference for rotation period, in refs.dat filemeta.ref;pos.framecharM*Mass of the star (4)solMassphys.massfloatR*Radius of the star (4)solRadphys.size.radiusfloatL*Bolometric luminosity of the star (4)solLumphys.luminosityfloatTeffEffective temperature of the star (4)Kphys.temperature.effectiveintdczHeight of the radiative-convective boundary (as a function of the stellar radius) (4)pos.cartesian.zfloatLx/bolLogarithm of the X-ray to bolometric luminosityphys.luminosity;arith.ratiofloat