J/A+A/467/229ivo://CDS.VizieR/J/A+A/467/229doi:10.26093/cds/vizier.34670229CDSPanov K.Dimitrov D.2017-06-30T05:48:33Z2007-06-23T14:19:51ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomyWide-band photometryThe rapidly rotating active stars FK Com and HD 199178 are investigated using extensive long-term photometry. The data set includes previously unpublished photometry, obtained at the Rozhen National Astronomical Observatory. We look for periodicities in the long-term photometric behaviour of both stars, as well as for spots, using light curve modelling. Special attention is paid to the behaviour of the "flip-flop" phenomenon.2007A&A...467..229Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/467/229CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/278/449 : Long-term photometry of FK Com (Jetsu+ 1993)J/A+A/282/L9 : "flip-flop" in FK Com (Jetsu+ 1994)J/A+AS/103/183 : UVBRI photometry of FK Com (Jetsu+ 1994)J/A+A/351/212 : V1794 UBVR time series (Jetsu+, 1999)J/A+AS/139/513 : 1975-1995 V1794 Cyg UBVRI photometry (Jetsu+, 1999)J/A+A/374/1049 : Photometry of FK Com for 1993-2001 (Korhonen+, 2001)J/A+A/390/179 : Study of FK Comae Berenices. IV. (Korhonen+ 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/467/229https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/467/229http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/467/229https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/467/229https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/467/229http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/467/229GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/467/229/table2aSummary of subsets for FK ComrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSETSubset number (1)meta.id;meta.mainintJD1Julian Date of subset beginningdtime.epochdoubleJD2Julian Date of subset enddtime.epochdoubleRef[1/9] Reference (2)meta.ref;pos.frameintJ/A+A/467/229/table2bSummary of subsets for HD 199178recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSETSubset number (1)meta.id;meta.mainintJD1Julian Date of subset beginningdtime.epochdoubleJD2Julian Date of subset enddtime.epochdoubleRef[1/9] Reference (2)meta.ref;pos.frameintJ/A+A/467/229/table3a*UBV data for FK ComrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian Datedtime.epochdoubleVmag? V magnitude in Johnson systemmagphot.mag;em.opt.VfloatnullableBmag? B magnitude in Johnson systemmagphot.mag;em.opt.BfloatnullableUmag? U magnitude in Johnson systemmagphot.mag;em.opt.Ufloatnullablee_Vmag? error in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullablee_Bmag? error in Bmagmagstat.error;phot.mag;em.opt.Bfloatnullablee_Umag? error in Umagmagstat.error;phot.mag;em.opt.UfloatnullableJ/A+A/467/229/table3b*UBV data for HD 199178recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJDJulian Datedtime.epochdoubleVmag? V magnitude in Johnson systemmagphot.mag;em.opt.VfloatnullableBmag? B magnitude in Johnson systemmagphot.mag;em.opt.BfloatnullableUmag? U magnitude in Johnson systemmagphot.mag;em.opt.Ufloatnullablee_Vmag? error in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullablee_Bmag? error in Bmagmagstat.error;phot.mag;em.opt.Bfloatnullablee_Umag? error in Umagmagstat.error;phot.mag;em.opt.UfloatnullableJ/A+A/467/229/table5aThe results of the modelling for FK ComLat2Latitude of Spot2degpos.bodyrc.latfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSETSubset numbermeta.id;meta.mainintYearAverage observing timeyrtime.duration;stat.meanfloatVminMinimum brightness in Vmagphot.mag;em.opt.VfloatVmaxMaximum brightness in Vmagphot.mag;em.opt.VfloatVmeanMean brightness in Vmagphot.mag.sb;em.opt.VfloatAVmagAmplitude of rotational modulation in Vmagsrc.var.amplitudefloatJDminJulian date of minimum brightnessdtime.epochdoublePhasePhase of minimum brightnesstime.phasefloatLong1Longitude of Spot1degpos.bodyrc.longfloatLat1Latitude of Spot1degpos.bodyrc.latfloatSize1Size of Spot1degphys.angSizefloatLong2Longitude of Spot2degpos.bodyrc.longfloatSize2Size of Spot2degphys.angSizefloatLong3Longitude of Spot3degpos.bodyrc.longfloatLat3Latitude of Spot3degpos.bodyrc.latfloatSize3Size of Spot3degphys.angSizefloatSigmaStandard deviation of residualsstat.stdevfloatJ/A+A/467/229/table5bThe results of the modelling for HD 199178recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSETSubset numbermeta.id;meta.mainintYearAverage observing timeyrtime.duration;stat.meanfloatVminMinimum brightness in Vmagphot.mag;em.opt.VfloatVmaxMaximum brightness in Vmagphot.mag;em.opt.VfloatVmeanMean brightness in Vmagphot.mag.sb;em.opt.VfloatAVmagAmplitude of rotational modulation in Vmagsrc.var.amplitudefloatJDminJulian date of minimum brightnessdtime.epochdoublePhasePhase of minimum brightnesstime.phasefloatLong1Longitude of Spot1degpos.bodyrc.longfloatLat1Latitude of Spot1degpos.bodyrc.latfloatSize1Size of Spot1degphys.angSizefloatLong2Longitude of Spot2degpos.bodyrc.longfloatLat2Latitude of Spot2degpos.bodyrc.latfloatSize2Size of Spot2degphys.angSizefloatLong3Longitude of Spot3degpos.bodyrc.longfloatLat3Latitude of Spot3degpos.bodyrc.latfloatSize3Size of Spot3degphys.angSizefloatSigmaStandard deviation of residualsstat.stdevfloat