J/A+AS/145/275ivo://CDS.VizieR/J/A+AS/145/275CDSNitschelm C.Lecavelier des Etangs A.Vidal-Madjar A.Ferlet R.,Olsen E.H.2000-12-02T20:54:28Z2000-12-02T21:54:15ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomymedium-band-photometryWe carried out a Stroemgren photometric survey of thirteen southern bright stars, including {beta} Pictoris itself, during three years, d'Astrophysique de Paris, in order to detect possible weak photometric variations. {beta} Pictoris presents a small long-term variation with a change of brightness by -2.1x10^-3^mag per year, over about two years from beginning of 1996, a situation relatively similar to the one about 18 years ago. Among the other stars, only HD 38392 presents weak photometric variations with a period of 21.4 days, probably related to the star rotation period. The negative result concerning photometric variations of all other stars suggests that those stars are actually really stable and strengthens the reality of the variations discovered in the case of {beta} Pictoris and HD 38392.2000A&AS..145..275Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/145/275CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/299/557 : Light variations on Beta Pic (Lecavelier des Etangs+, 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/145/275https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/145/275http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/145/275https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/145/275https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/145/275http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/145/275GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/145/275/stars (Star positions (from Simbad))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/145/275/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/145/275/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/145/275/stars?GETtext/xml+votable180.050000true1.70875-23.10750.0055555555555555566/16606 17156 17171 20997 21060 21080 21289 21467 22154 22708 23057 23076 23081 23451 23479 23557 29207 29255 33111 33113 33796 33849 33888 33910 34004 34054 34065 35948 35968 35999 36691 36697https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/145/275?format=asciiOpticaldefaultJ/A+AS/145/275/starsStar positions (from Simbad)HDHD (Cat. <III/135>) numbermeta.id;meta.mainintprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadask the SIMBAD data-base about this objectmeta.refcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainYearsTwo last digits of the years of the beginning and the end of the survey (for each star)time.intervalcharJ/A+AS/145/275/tablesStroemgren photometric data of Beta Pictoris-like stars and their comparison stars used to analyse the datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD number of the starmeta.id;meta.mainintHJDHeliocentric Julian datedtime.epochdoubleAirmassAirmass of observationobs.airMassdoubleVmagStroemgren V magnitudemagphot.mag;em.opt.Bfloatb-yStroemgren (b-y) colour indexmagphot.color;em.opt.B;em.opt.Vfloatm1Stroemgren m1 colour-index differencemagphot.colorfloatc1Stroemgren c1 colour-index differencemagphot.colorfloat