J/other/RAA/18.1ivo://CDS.VizieR/J/other/RAA/18.137doi:10.26093/cds/vizier/dx/bikbdhCDSIbryamov S.Semkov E.Milanov T.Peneva S.2026-02-10T20:07:27Z2019-01-03T08:08:11ZCDS 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 multicolor photometric observations of 15 pre-main sequence stars collected in the period September 2010 - October 2017. The stars from our study are located in the star-forming HII region IC 5070. These objects were previously detected as either emission line stars, flare stars, T Tauri variables or Herbig Ae/Be stars. Photometric observations, especially concerning the long-term behavior of the objects, are missing in the literature. We present the first photometric monitoring for all stars from our study. The analysis of the obtained BVRI photometric data allows us to draw the conclusion that all investigated objects are variable stars. In the case of LkHa 146, we identified previously unknown periodicity in its photometric variability.2018RAA....18..137Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/18.137CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/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)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/18.137https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/18.137http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/18.137https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/18.137https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/18.137http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/18.137GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/18.137/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/18.137/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/18.137/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/18.137/stars?GETtext/xml+votable180.050000true312.654291744.30686110.0055555555555555566/14685 14687 15368 153702.367228618189496e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/18.137?format=asciiOpticalInfrareddefaultJ/other/RAA/18.137/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar namemeta.idchar2MASS2MASS ID (JHHMMSSss+DDMMSSs)meta.id;meta.maincharRAJ2000Righ Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainLCLight curvemeta.ref.urlcharFileNameName of the file with photometrymeta.id;phot;meta.filecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/other/RAA/18.137/table1LkHa 137 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table22MASS J20504608+4419100 photometryTelTelescope used (1)instr.setupcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableJ/other/RAA/18.137/table3V1956 Cyg photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table4LkHa 141 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table5V1490 Cyg photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table6V1532 Cyg photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table7V1597 Cyg photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table8LkHa 146 photometryTelTelescope used (1)instr.setupcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableJ/other/RAA/18.137/table9LkHa 147 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table10V1598 Cyg photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table11V1492 Cyg photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table12LkHa 161 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table13LkHa 168 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table14LkHa 172 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupcharJ/other/RAA/18.137/table15LkHa 173 photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('YYYY/MM/DD' format)time.epochnullableJDJulian Date (JD-2400000)dtime.epochdoubleBmag? B magnitudemagphot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.IfloatnullableTelTelescope used (1)instr.setupchar