II/55ivo://CDS.VizieR/II/55CDSShakhovskaya N.I.2018-01-04T08:21:40Z1997-12-09T16:22:25ZCDS support team

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

cds-question@unistra.frstellar-flaresThis catalog groups the flare stars as presented in the IAU Colloquium 15 (combined Colloquium of Commisions 27 and 42) held at Bamberg 31-Aug to 03-Sep 1971 entitled "New Directions and New Frontiers in Variable Star Research" The following definition of the UV Cet-type variables was given in Kukarkin's General Catalogue of Variable Stars (1969): "dMe stars, sometimes subject to flares with the amplitude from 1 to 6mag. Maximum brightness is attained in seconds or dozens of seconds after the commencement of the flare; the star returns to its normal brightness after several minutes, or dozens of minutes. A typical representative is UV Ceti." Now it is impossible to consider this definition as a quite right because: 1) There are a number of M-dwarf stars affected by the flares similar to the UV Ceti flares, but in their quiet state spectra, no emission lines are observed. For example, BD+43 44A, BD+43 44 B, and SZ UMa, the flare activity of these stars were detected in Crimea; and probably BD-04 4048B is suspected as a flare star by HERBIG. 2) The lower limit of flare amplitude cited in Kukarkin's corresponds to visual observations, but the modern photoelectric observations register flares with amplitudes to 0.02-0.05mag. Therefore we suppose, that UV Cet-type variables are K-M dwarfs, which show quick flares with amplitudes exceeding the observational errors, and duration of the flares are from a few seconds up to a few hundred minutes. The "catalog" file includes only such variable K-M dwarf stars, for which existing observations allow to construct flare light curves. All stars in "catalog", except V371 Ori, have photoelectric flare light curves. The strong flare of V371 Ori was observed in radio region, but simultaneous optical observations were carried out photographically and visually only.Veroeff. Bamberg IX, 138 (1971)https://cdsarc.cds.unistra.fr/viz-bin/cat/II/55CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=II/55https://vizier.iucaa.in/viz-bin/VizieR-2?-source=II/55http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=II/55https://vizier.cds.unistra.fr/viz-bin/votable?-source=II/55https://vizier.iucaa.in/viz-bin/votable?-source=II/55http://vizieridia.saao.ac.za/viz-bin/votable?-source=II/55GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table II/55/catalog (The catalogue of flare stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/II/55/catalog?https://vizier.iucaa.in/viz-bin/conesearch/II/55/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/II/55/catalog?GETtext/xml+votable180.050000true4.595355644.02295220.0055555555555555566/463 546 2597 2737 3715 4444 5534 6340 6384 7512 8440 10156 12454 13308 13743 14266 14772 15243 15530 17058 18450 18588 18760 19783 20071 22148 22209 22289 22709 22904 23719 25793 26327 26555 26614 26972 27419 27462 27731 28955 30508 30626 30833 32500 35150 36526 37921 41591 44793 46920 48263 48274https://cdsarc.cds.unistra.fr/viz-bin/moc/II/55?format=asciidefaultII/55/catalogThe catalogue of flare starsSimbadNameSimbad column added by the CDSmeta.idcharNameDesignation of the objectmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAdegRight ascension B1950 (degrees)degpos.eq.raDEdegDeclination B1950 (degrees)degpos.eq.decRemRemark (Multiplicity, other id., etc.)meta.notecharPeriod[]? Period (for binaries) in days or years depending on x_Periodmeta.notedoublenullablex_Period[YD] Units of Period: Years of Daysmeta.unit;time.periodcharMajAxis[]? Semi-major axis (for binaries)arcsecphys.angSize.smajAxis;src.orbitalfloatnullableRemarkOther designation (Gliese number) or commentmeta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main