J/A+A/397/147ivo://CDS.VizieR/J/A+A/397/147doi:10.26093/cds/vizier.33970147CDSPizzolato N.Maggio A.Micela G.Sciortino S.Ventura P.2017-10-18T08:25:09Z2003-08-25T21:29:34ZCDS support team

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

cds-question@unistra.frlate-type-starsx-ray-sourcesvisible-astronomybroad-band-photometryWe present the results of a new study on the relationship between coronal X-ray emission and stellar rotation in late-type main-sequence stars. We have selected a sample of 259 dwarfs in the B-V range 0.5-2.0, including 110 field stars and 149 members of the Pleiades, Hyades, {alpha} Persei, IC 2602 and IC 2391 open clusters. All the stars have been observed with ROSAT, and most of them have photometrically-measured rotation periods available. Our results confirm that two emission regimes exist, one in which the rotation period is a good predictor of the total X-ray luminosity, and the other in which a constant saturated X-ray to bolometric luminosity ratio is attained; we present a quantitative estimate of the critical rotation periods below which stars of different masses (or spectral types) enter the saturated regime.2003A&A...397..147Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/397/147CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/341/751 : ROSAT HRI observations of the Pleiades (Micela+ 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/397/147https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/397/147http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/397/147https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/397/147https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/397/147http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/397/147GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/397/147/stars (Star positions (from Simbad))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/397/147/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/397/147/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/397/147/stars?GETtext/xml+votable180.050000true153.5821.0750.0055555555555555565/118 784 6/137 341-342 348 373 451 461 463 485 496 546 684 1603 1768 1770-1771 1774 3093-3095 3140 3144 4444 4468 5074 5088 5413 5420 5670 5853 7264 7763 8790 10225 10303 10375 10771 12454 12592 12825 12944 13301 13451 13743 14266 14522 16041 16069 17124 17137 17219 17425 18139 18553 19912 20071 20278 20753 21060 21177 22148 22289 22708 22818 22964 23230 23342 23515 23527 23533 23535 23537-23539 23544-23545 23547-23548 23564 23661 24151 24160 25192 25793 26279 26327 26521 26555 27374 27762 27973 28341 28605 28696 29196 30176 30576 30965 31087 31101 31130 31132 31416 31478 31751 32757 33116 33717 33818 34896 35079 36379 36483 36664 36697 36762 37229-37231 37240 37242 37316-37317 37408 37787-37788 37790-37791 38168 38932 40784 40823 40932 41272 41591 41763 42760 43639 44284 45564 46925 47589 48274https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/397/147?format=asciiX-rayOpticaldefaultJ/A+A/397/147/table1Field dwarf sampleDist? Distancepcpos.distancefloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharB-VB-V colour indexmagphot.color;em.opt.B;em.opt.VfloatVmagV magnitudemagphot.mag;em.opt.Vfloatl_PerLimit flag on Permeta.code.errorcharPerPerioddtime.periodfloatr_PerReference for the period, in refs.dat filemeta.refcharlogLXX-ray luminositylog(1e-07W)phys.luminosity;em.X-rayfloatr_logLXReference for X-ray luminosity, in refs.dat filemeta.refcharlogLX/LbolBolometric-to-X-ray luminosity ratiophys.luminosity;arith.ratiofloatMassMasssolMassphys.massfloatJ/A+A/397/147/table2Cluster stars: Pleiades, IC 2602, IC 2391, {alpha} Persei and HyadesNameNamemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharDist? Distancepcpos.distanceintnullableB-VB-V colour indexmagphot.color;em.opt.B;em.opt.VfloatVmagV magnitudemagphot.mag;em.opt.VfloatPerPerioddtime.periodfloatr_PerReference for the period, in refs.dat filemeta.refintlogLXX-ray luminositylog(1e-07W)phys.luminosity;em.X-rayfloatr_logLXReference for X-ray luminosity, in refs.dat filemeta.refintlogLX/LbolBolometric-to-X-ray luminosity ratiophys.luminosity;arith.ratiofloatMassMasssolMassphys.massfloatJ/A+A/397/147/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.refcharBibCodeBibCodemeta.bib.bibcodecharAutauthor's namemeta.bib.authorcharComCommentsmeta.notecharJ/A+A/397/147/starsStar positions (from Simbad)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharprimaryRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSNameSimbad designationmeta.idcharSimbadSimbad column added by the CDSmeta.refchar