J/ApJ/917/80ivo://CDS.VizieR/J/ApJ/917/80doi:10.26093/cds/vizier.19170080CDSSzabo Z.M.Kospal A.Abraham P.Park S.Siwak M.Green J.D.Moor A.,Pal A.Acosta-Pulido J.A.Lee J.-E.Cseh B.Csornyei G.Hanyecz O.,Konyves-Toth R.Krezinger M.Kriskovics L.Ordasi A.Sarneczky K.,Seli B.Szakats R.Szing A.Vida K.2023-02-22T09:01:18Z2023-02-17T13:34:22ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsinfrared-photometryvisible-astronomyWide-band photometryinfrared-astronomyspectroscopyAmong the low-mass pre-main sequence stars, a small group called FU Orionis-type objects (FUors) are notable for undergoing powerful accretion outbursts. V1057 Cyg, a classical example of an FUor, went into outburst around 1969-1970, after which it faded rapidly, making it the fastest-fading FUor known. Around 1995, a more rapid increase in fading occurred. Since that time, strong photometric modulations have been present. We present nearly 10yr of source monitoring at Piszkesteto Observatory, complemented with optical/NIR photometry and spectroscopy from the Nordic Optical Telescope, Bohyunsan Optical Astronomy Observatory, Transiting Exoplanet Survey Satellite, and Stratospheric Observatory for Infrared Astronomy. Our light curves show continuation of significant quasi-periodic variability in brightness over the past decade. Our spectroscopic observations show strong wind features, shell features, and forbidden emission lines. All of these spectral lines vary with time. We also report the first detection of [SII], [NII], and [OIII] lines in the star.2021ApJ...917...80Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/917/80CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/311 : WISE All-Sky Data Release (Cutri+ 2012)II/328 : AllWISE Data Release (Cutri+ 2013)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)J/A+A/407/1157 : UVES sky atlas (Hanuschik+, 2003)J/BaltA/15/483 : Vilnius photometry in LDN 935 (Laugalys+, 2006)J/ApJS/193/25 : The NAN complex. II. MIPS observations (Rebull+, 2011)J/MNRAS/434/38 : 25-years photometry of V1057 Cygni (Kopatskaya+, 2013)J/AJ/147/140 : SED of 24 class I & class II FU Orionis stars (Gramajo+, 2014)J/ApJ/792/L2 : C/2012 F6 (Lemmon) and C/2012 S1 (ISON) maps (Cordiner+, 2014)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/A+A/607/A39 : 7 FU Orionis-type stars CO spectral cubes (Feher+, 2017)J/A+A/618/A79 : FU Orionis small-amplitude light variations (Siwak+, 2018)J/ApJ/889/148 : V346 Nor IJHKs photometry & IR spectra (Kospal+, 2020)J/ApJ/899/128 : Members of NGC 7000/IC 5070 Complex (Kuhn+, 2020)J/A+A/643/A29 : Z CMa NW emission lines (Sicilia-Aguilar+, 2020)J/A+A/644/A135 : V646 Pup TESS & ground photometry and spectrum (Siwak+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/917/80https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/917/80http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/917/80https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/917/80https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/917/80http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/917/80GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap8.650015785639275e-20 4.920466254354166e-19OpticalInfrareddefaultJ/ApJ/917/80/table4Optical and near-IR photometry of V1057 CygKsmag[6.13/7.29]? Apparent 2MASS Ks band magnitudemagphot.mag;em.IR.KfloatnullableInstInstrument used (1)meta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObs[2005/2021] Year of the observationtime.epochMJD[53672.75/59343.04] Modified Julian Datedtime.epochdoubleBmag[14.07/14.99]? Apparent Johnson B band magnitudemagphot.mag;em.opt.BfloatnullableVmag[12.3/12.97]? Apparent Johnson V band magnitudemagphot.mag;em.opt.Vfloatnullablegpmag[13.49/13.82]? Apparent Sloan g' band magnitudemagphot.mag;em.opt.BfloatnullableRCmag[11.26/11.81]? Apparent Cousins R band magnitudemagphot.mag;em.opt.RfloatnullableICmag[10.19/10.67]? Apparent Cousins I band magnitudemagphot.mag;em.opt.IfloatnullableRJmag[11.39/11.58]? Apparent Johnson R band magnitudemagphot.mag;em.opt.RfloatnullableIJmag[10.42/10.59]? Apparent Johnson I band magnitudemagphot.mag;em.opt.Ifloatnullablerpmag[11.7/11.96]? Apparent Sloan r' band magnitudemagphot.mag;em.opt.Rfloatnullableipmag[7.34/11.19]? Apparent Sloan i' band magnitudemagphot.mag;em.opt.IfloatnullableJmag[8.03/8.52]? Apparent 2MASS J band magnitudemagphot.mag;em.IR.JfloatnullableHmag[7.19/7.31]? Apparent 2MASS H band magnitudemagphot.mag;em.IR.HfloatnullableJ/ApJ/917/80/fig14The near-infrared J, H, and K spectrum of V1057 Cyg observed with the Nordic Optical Telescope/NOTCamrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBandIR bandmeta.code;instr.filtercharlambda[1.18/2.36] Wavelengthumem.wldoubleFlux[9.2e-14/1.91e-13]? Flux; in erg/s/cm^2^/{AA} unitscW.m**-2.nm**-1phot.fluxdoublenullable