J/A+AS/125/75ivo://CDS.VizieR/J/A+AS/125/75CDSPavlovski K.Harmanec P.Bozic H.Koubsky P.Hadrava P.Kriz S.,Ruzic Z.Stefl S.1997-12-09T18:45:11Z1997-12-09T19:45:08ZCDS support team

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

cds-question@unistra.frbe-starsvisible-astronomyWide-band photometryA summary of results of the systematic UBV photoelectric monitoring of bright northern Be stars carried out at the Hvar Observatory between 1972 and 1990 is presented. Altogether, 76 Be stars of all luminosity classes were observed and 13848 UBV measurements secured. Simultaneously, 9648 UBV measurements of 48 check stars (most of them of early spectral types) were obtained. A careful transformation of all observations into the standard Johnson system allowed detection and monitoring of even very mild long-term light and colour variations of these objects. Almost all early-type Be stars in the sample turned out to be variable. For several stars phase-locked light variations related to their binary nature were established. Sudden brightenings, on a time scale of a few days, were detected for o Cas and QR Vul.1997A&AS..125...75Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/125/75CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/125/75https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/125/75http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/125/75https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/125/75https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/125/75http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/125/75GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/125/75/table3List of the check starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD (Cat. <III/135>) numbermeta.id;meta.mainintNameOther name of starmeta.idcharNSeasonNumber of seasons in which the star was observedmeta.numberinto_VmagNumber of UBV measurementsmeta.numberintVmagJohnson V magnitudemagphot.mag;em.opt.Vfloate_VmagStandard deviation in Vmagmagstat.errorfloatBmagJohnson B magnitudemagphot.mag;em.opt.Bfloate_BmagStandard deviation in Bmagmagstat.errorfloatUmagJohnson U magnitudemagphot.mag;em.opt.Ufloate_UmagStandard deviation in Umagmagstat.errorfloatSpTypeSpectral typesrc.spTypecharJ/A+AS/125/75/table2List of the comparison starsNameOther name of starmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD (Cat. <III/135>) numbermeta.id;meta.mainintVmagJohnson V magnitudemagphot.mag;em.opt.VfloatB-VJohnson B-V indexmagphot.color;em.opt.B;em.opt.VfloatU-BJohnson U-B indexmagphot.color;em.opt.U;em.opt.BfloatSpTypeSpectral typesrc.spTypechar