J/other/RAA/17.2ivo://CDS.VizieR/J/other/RAA/17.20doi:10.26093/cds/vizier/dx/bhkcaCDSIbryamov S.I.Semkov E.H.Milanov T.R.Peneva S.P.2026-02-10T20:07:21Z2017-02-28T08:18:43ZCDS support team

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

cds-question@unistra.frvariable-starspre-main-sequence-starsinfrared-photometryvisible-astronomybroad-band-photometryLong-term BVRI photometric light curves of the pre-main sequence stars V977 Cep and V982 Cep during the period from 2000 October to 2016 August are presented. The stars are located in the vicinity of the reflection nebula NGC 7129. Our photometric data show that both stars exhibit strong photometric variability in all optical passbands, which is typical for Classical T Tauri stars. Using our observational data we analyze the reasons for the observed brightness variations. In the case of V977 Cep we identify previously unknown periodicity in its light curve.2017RAA....17...20Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/17.20CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/other/RAA/14.1264 : V350 Cep UBVRI long-term photometry (Ibryamov+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/17.20https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/17.20http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/17.20https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/17.20https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/17.20http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/17.20GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/17.20/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/17.20/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/17.20/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/17.20/stars?GETtext/xml+votable180.050000true325.1237566.4456110.0055555555555555566/157812.367228618189496e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/17.20?format=asciiOpticalInfrareddefaultJ/other/RAA/17.20/starsList of studied starsStarStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Righ ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFileNameName of the file with photometrymeta.id;phot;meta.filecharLCShow the light curvesmeta.ref.urlcharJ/other/RAA/17.20/table1V977 Cep photometric CCD observations during the period 2000 Oct. - 2016 Aug.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYYMMDD' format)time.epochnullableJDJulian Datedtime.epochcharImag? Cousins I magnitudemagphot.mag;em.opt.IfloatnullableRmag? Cousins R magnitudemagphot.mag;em.opt.RfloatnullableVmag? Johnson V magnitudemagphot.mag;em.opt.VfloatnullableBmag? Johnson B magnitudemagphot.mag;em.opt.BfloatnullableTelTelescope used (1)instr.setupcharCCDCCD used (2)meta.id;instrcharJ/other/RAA/17.20/table2V982 Cep photometric CCD observations during the period 2002 Oct. - 2016 Aug.JDJulian Datedtime.epochcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYYMMDD' format)time.epochnullableImag? Cousins I magnitudemagphot.mag;em.opt.IfloatnullableRmag? Cousins R magnitudemagphot.mag;em.opt.RfloatnullableVmag? Johnson V magnitudemagphot.mag;em.opt.VfloatnullableBmag? Johnson B magnitudemagphot.mag;em.opt.BfloatnullableTelTelescope used (1)instr.setupcharCCDCCD used (2)meta.id;instrchar