J/other/RAA/20.1ivo://CDS.VizieR/J/other/RAA/20.194doi:10.26093/cds/vizier/dx/cakbjeCDSIbryamov S.Semkov E.Peneva S.Gocheva K.2026-02-10T20:07:47Z2023-11-09T08:32:01ZCDS 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-photometryThis paper reports results from the first long-term BV(RI)c photometric CCD observations of three variable pre-main-sequence stars collected during the period from February 2007 to January 2020. The investigated stars are located in the field of the PMS star V733 Cep within the Cepheus OB3 association. All stars from our study show rapid photometric variability in all-optical passbands. In this paper, we describe and discuss the photometric behavior of these stars and the possible reasons for their variability. In the light variation of two of the stars, we found periodicity.2020RAA....20..194Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/20.194CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/556/A60 : BVRI observations of the FUor star V582 AurJ/A+A/568/A49 : Pre-main sequence stars long term phot.J/other/RAA/14.1264 : V350 Cep UBVRI long-term photometry (Ibryamov+, 2014)J/other/PASA/32.11 : Long-term UBVRI photometry of GM Cep (Semkov+, 2015)J/other/PASA/32.21 : Long-Term Multicolour Photometry of YSOs (Ibryamov+ 2015)J/other/BAJ/22.3 : BVRI photometry of 5 PMS stars (Ibryamov+, 2015)J/other/BAJ/24.62 : BVRI Photometry of 14 PMS stars (Ibryamov+, 2016)J/other/RAA/17.20 : V977 Cep & V982 Cep long-term photometry (Ibryamov+ 2017)J/other/PASA/35.7 : Long-term BVRI photometry of V2492 Cygni (Ibryamov+ 2018)J/other/BAJ/29.10 : Long-term BVRI photometry of V1704 Cygni (Ibryamov+ 2018)J/other/RAA/18.137 : Long-term BVRI phot. of 15 PMS stars (Ibryamov+, 2018)J/other/Ser/199.39 : Long-Term Photometry of five PMS stars (Semkov+, 2019)J/other/Ser/202.31 : Long-term BVRI photometry of V900 Mon (Semkov+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/20.194https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/20.194http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/20.194https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/20.194https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/20.194http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/20.194GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/20.194/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/20.194/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/20.194/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/20.194/stars?GETtext/xml+votable180.050000true343.443958362.58286110.0055555555555555566/156832.367228618189496e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/20.194?format=asciiOpticalInfrareddefaultJ/other/RAA/20.194/starsList of studied starsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS ID (JHHMMSSss+DDMMSSs)meta.id;meta.maincharRAJ2000Righ Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainLCShow the light curvesmeta.ref.urlcharFileNameName of the file with photometrymeta.id;phot;meta.filecharJ/other/RAA/20.194/table12MASS J22534654+6234582 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('DD.MM.YYYY' format)time.epochnullableJDJulian Date of observation (JD-2450000)dtime.epochdoubleImag? Ic magnitudemagphot.mag;em.opt.IfloatnullableRmag? Rc magnitudemagphot.mag;em.opt.RfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableBmag? B magnitudemagphot.mag;em.opt.BfloatnullableTelTelescope used (1)instr.setupcharCCDCCD used (2)meta.id;instrcharJ/other/RAA/20.194/table22MASS J22533629+6231446 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('DD.MM.YYYY' format)time.epochnullableJDJulian Date of observation (JD-2450000)dtime.epochdoubleImag? Ic magnitudemagphot.mag;em.opt.IfloatnullableRmag? Rc magnitudemagphot.mag;em.opt.RfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableBmag? B magnitudemagphot.mag;em.opt.BfloatnullableTelTelescope used (1)instr.setupcharCCDCCD used (2)meta.id;instrcharJ/other/RAA/20.194/table32MASS J22531578+6235262 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('DD.MM.YYYY' format)time.epochnullableJDJulian Date of observation (JD-2450000)dtime.epochdoubleImag? Ic magnitudemagphot.mag;em.opt.IfloatnullableRmag? Rc magnitudemagphot.mag;em.opt.RfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableBmag? B magnitudemagphot.mag;em.opt.BfloatnullableTelTelescope used (1)instr.setupcharCCDCCD used (2)meta.id;instrchar