J/other/PASA/35.ivo://CDS.VizieR/J/other/PASA/35.7doi:10.26093/cds/vizier/ds/dfkhCDSIbryamov S.I.Semkov E.H.Peneva S.P.2026-03-17T20:08:34Z2019-01-03T07:54:12ZCDS 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-photometryResults from BVRI photometric observations of the young stellar object V2492 Cyg collected during the period from August 2010 to December 2017 are presented. The star is located in the field of the Pelican Nebula and it was discovered in 2010 due to its remarkable increase in the brightness by more than 5mag in R-band. According to the first hypothesis of the variability, V2492 Cyg is an FUor candidate. During subsequent observations, it was reported that the star shows the characteristics inherent to EXor- and UXor-type variables. The optical data show that during the whole time of observations the star exhibits multiple large amplitude increases and drops in the brightness. In the beginning of 2017, we registered a significant increase in the optical brightness of V2492 Cyg, which seriously exceeds the maximal magnitudes registered after 2010.2018PASA...35....7Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/PASA/35.7CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/551/A62 : V2492 Cyg light variations (Kospal+, 2013)J/AJ/145/59 : PTF 10nvg optical & mid-IR photometry (Hillenbrand+ 2013)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/RAA/18.137 : 15 PMS stars long-term BVRI photometry (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/PASA/35.7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/PASA/35.7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/PASA/35.7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/PASA/35.7https://vizier.iucaa.in/viz-bin/votable?-source=J/other/PASA/35.7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/PASA/35.7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.367228618189496e-19 4.920466254354166e-19OpticalInfrareddefaultJ/other/PASA/35.7/table1V2492 Cygni photometric CCD observations during the period 2010 Aug-2017 DecrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation ('DD.MM.YYYY' format)time.epochnullableJDJulian Datedtime.epochdoubleImag? I magnitudemagphot.mag;em.opt.IfloatnullableRmag? R 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