J/other/Nat/485.ivo://CDS.VizieR/J/other/Nat/485.478CDSMaehara H.Shibayama T.Notsu S.Notsu Y.Nagao T.Kusaba S.,Honda S.Nogami D.Shibata K.2017-11-10T11:15:58Z2012-08-23T07:41:48ZCDS support team

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

cds-question@unistra.frg-starsvariable-starsstellar-flaresSolar flares are caused by the sudden release of magnetic energy stored near sunspots. They release 10^29^ to 10^32^ergs of energy on a timescale of hours. Similar flares have been observed on many stars, with larger 'superflares' seen on a variety of stars, some of which are rapidly rotating and some of which are of ordinary solar type. The small number of superflares observed on solar-type stars has hitherto precluded a detailed study of them. Here we report observations of 365 superflares, including some from slowly rotating solar-type stars, from about 83,000 stars observed over 120 days. Quasi-periodic brightness modulations observed in the solar-type stars suggest that they have much larger starspots than does the Sun. The maximum energy of the flare is not correlated with the stellar rotation period, but the data suggest that superflares occur more frequently on rapidly rotating stars. It has been proposed that hot Jupiters may be important in the generation of superflares on solar-type stars, but none have been discovered around the stars that we have studied, indicating that hot Jupiters associated with superflares are rare.2012Natur.485..478Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/Nat/485.478CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/Nat/485.478https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/Nat/485.478http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/Nat/485.478https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/Nat/485.478https://vizier.iucaa.in/viz-bin/votable?-source=J/other/Nat/485.478http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/Nat/485.478GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/Nat/485.478/tables1 (List of G-type main sequence stars showing superflares)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/Nat/485.478/tables1?https://vizier.iucaa.in/viz-bin/conesearch/J/other/Nat/485.478/tables1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/Nat/485.478/tables1?GETtext/xml+votable180.050000true290.958837.578388060.0055555555555555565/3778 3783 6/14579 14581 14582 14584 14585 14588 14589 14730 14735 14746 14756 14759 14761 14762 14763 14765 14779 14781 14783 14794 14824 14825 14826 14828 14915 14919 14921 14922 14923 14924 14925 14929 14931 14932 14933 14936 14937 14947 14948 14949 14950 14955 14957 14959 14960 14962 14965 14966 14969 14974 15040 15041 15044 15057 15060 15061 15104 15106 15108 15118 15120 15121 15123 15129 15131 15139 15141 15142 15143 15146 15147 15148 15150 15153 15154 15155 15157 15158 15160 15168 15169 15170 15172 15174https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/Nat/485.478?format=asciiOpticaldefaultJ/other/Nat/485.478/tables1List of G-type main sequence stars showing superflaresNNumber of detected flaresmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKIC identification number (Cat. V/133)meta.id;meta.mainintTeffEffective temperature from KICKphys.temperature.effectiveintloggGravity surface from KIClog(cm.s**-2)phys.gravityfloatgmagg magnitude from KICmagphot.mag;em.opt.RfloatPerPeriod of the largest amplitude component of the brightness variationdtime.periodfloatAmpNormalized amplitude of the dominant periodsrc.var.amplitudedoubleFRateFlare rateyr**-1meta.numberdoubleSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from KIC catalog (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPositions from KIC catalog (V/133) (declination part)degpos.eq.dec;meta.main