J/A+A/410/671ivo://CDS.VizieR/J/A+A/410/671doi:10.26093/cds/vizier.34100671CDSMessina S.Pizzolato N.Guinan E.F.Rodon M.2004-02-26T11:21:24Z2004-02-26T12:20:25ZCDS support team

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

cds-question@unistra.frlate-type-starsx-ray-sourcesmagnetic-fieldsThe maximum amplitude A_max_ of spot-induced brightness variations from long-term V-band photometry and the ratio L_X_/L_bol_ between X-ray and bolometric luminosities are suitable indicators of the level of magnetic activity in the photosphere and in the corona of late-type stars, respectively. By using these activity indicators we investigate the dependence of coronal X-ray emission on the level of photospheric starspot activity in a homogeneous sample of low mass main-sequence field and cluster stars of different ages (IC 2602, IC 4665, IC 2391, {alpha} Per, Pleiades and Hyades).2003A&A...410..671Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/410/671CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)V/80 : Low-Mass Stars Membership in Alpha Per Cluster (Prosser 1992)J/ApJS/91/625 : ROSAT survey of the Pleaides (Stauffer+ 1994)J/A+A/341/751 : ROSAT HRI observations of the Pleiades (Micela+ 1999)J/AJ/105/1441 : IC 4665 (Prosser 1993)J/ApJS/85/315 : F, G and K dwarf stars of the Pleiades (Soderblom+ 1993)J/ApJS/91/625 : ROSAT survey of the Pleaides (Stauffer+ 1994)J/A+AS/115/41 : UBV(RI) photometry of cool stars (Cutispoto+, 1996)J/A+AS/120/127 : UBVRI photometry of 7 dwarfs in Alpha Per (Bouvier 1996)J/A+A/335/183 : Pleiades low-mass stars rotational velocities (Queloz+ 1998)J/A+AS/127/207 : UBV(RI)c photometry of active stars. VII. (Cutispoto 1998)J/A+A/350/513 : V368 Cep UBVRI time series (Kahanpaa+, 1999)J/A+AS/138/87 : UBVRI photometry of EUV stellar sources (Cutispoto+ 1999)J/A+AS/140/29 : Photometric monitoring of late-type stars (Strassmeier+ 1999)J/A+A/364/205 : UBVy photometry of cool stars (Cutispoto+, 2000)J/A+AS/142/275 : Stellar-activity of late-type stars (Strassmeier+ 2000)J/A+A/367/910 : UBV(RI)c photometry of active stars. IX (Cutispoto+, 2001)J/A+A/393/225 : Starspot cycles of six young solar analogues (Messina+, 2002)J/A+A/394/505 : UBV photometry of LQ Hya (Berdyugina+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/410/671https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/410/671http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/410/671https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/410/671https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/410/671http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/410/671GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/410/671/table1 (Photometry)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/410/671/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/410/671/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/410/671/table1?GETtext/xml+votable180.050000true266.3320835.6152780.0055555555555555565/118 775 6/60 341-342 348 373 451 461-463 484-485 496 1771 1875 3089 3091-3092 3094 3096-3097 3099 3125 3136 3138-3139 3168 4289 4591 5853 7763 10203 10375 11510 11856 12592 12944 13427 14208 15091 15267 16220 17124 17219 18769 20127 20327 21094 21118 21956 22146 22289 22964 23230 23342 23515 23527 23533 23535 23537-23539 23544-23545 23547-23548 23661 24151 24160 24239 25793 26521 27973 28122 28341 29196 30626 30965 31130 31785 31788 31790 32147 33116 33312 33572 34074 35773 36664 36697 37229-37231 37240 37242 37316-37317 37419 37787-37788 37790-37791 40784 46925 48274https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/410/671?format=asciiX-raydefaultJ/A+A/410/671/table1PhotometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster to which the star belongsmeta.id.parentcharn_Name[*] *: Stars for which the unpublished Villanova photometry was usedmeta.notecharNameName in the cataloguemeta.id;meta.maincharprimaryOnameOther name as variable starmeta.idcharVmaxBrightest V-band magnitudemagphot.mag;em.opt.VfloatB-V? B-V colourmagphot.color;em.opt.B;em.opt.VfloatnullablePerRotational perioddtime.periodfloatAmaxMaximum V-band light curve amplitudemagsrc.var.amplitudefloatr_PerReference for rotational period, in refs.dat filemeta.refcharr_AmaxReference for light curve amplitude, in refs.dat filemeta.refcharLCNumber of light curvemeta.bib.figintFlagStar used to define the upper envelope (1)meta.notechar_RAPosition extracted from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPosition extracted from Simbad (declination part)degpos.eq.dec;meta.mainJ/A+A/410/671/table2X-ray datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster to which the star belongsmeta.id.parentcharNameName in the cataloguemeta.id;meta.maincharlogLXX-ray luminositylog(1e-07W)phys.luminosity;em.X-rayfloatlogLX/LbolX-to-bolometric luminosities ratiophys.luminosity;arith.ratiofloate_logLX/LbolUncertainty on logLX/Lbolstat.errorfloatr_logLX[a-h ] References for logLX, in refs.dat filemeta.refcharJ/A+A/410/671/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.refcharClusterCluster to which the star belongsmeta.id.parentcharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar