J/AJ/145/113ivo://CDS.VizieR/J/AJ/145/113doi:10.26093/cds/vizier.51450113CDSWolk S.J.Rice T.S.Aspin C.A.2017-06-01T08:53:10Z2014-05-16T14:56:08ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvariable-starsWe present a subset of the results of a three-season, 124 nights, near-infrared monitoring campaign of the dark clouds Lynds 1003 and Lynds 1004 in the Cygnus OB7 star-forming region. In this paper, we focus on the field star population. Using three seasons of UKIRT J, H, and K-band observations spanning 1.5 years, we obtained high-quality photometry on 9200 stars down to J=17mag, with photometric uncertainty better than 0.04mag. After excluding known disk-bearing stars we identify 149 variables-1.6% of the sample. Of these, about 60 are strictly periodic, with periods predominantly <2days. We conclude this group is dominated by eclipsing binaries. A few stars have long period signals of between 20 and 60 days. About 25 stars have weak modulated signals, but it was not clear if these were periodic. Some of the stars in this group may be diskless young stellar objects with relatively large variability due to cool starspots. The remaining ~60 stars showed variations which appear to be purely stochastic.2013AJ....145..113Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/145/113CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)J/AJ/142/160 : Kepler Mission. II. 2165 eclipsing binaries (Slawson+, 2011)J/A+A/503/651 : Variable stars in a Carina VLT/VIMOS field (Pietrukowicz+ 2009)J/AJ/124/1001 : JHKs photometry of Cha I variables (Carpenter, 2002)J/AJ/121/3160 : JHK photometry near the Trapezium region (Carpenter+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/145/113https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/145/113http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/145/113https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/145/113https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/145/113http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/145/113GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/145/113/variable (Strongly periodic stars , stochastically variable stars , and other possibly periodic stars in the monitored field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/145/113/variable?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/145/113/variable?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/145/113/variable?GETtext/xml+votable180.050000true314.607333352.380.0055555555555555565/3855https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/145/113?format=asciiInfrareddefaultJ/AJ/145/113/variableStrongly periodic stars , stochastically variable stars , and other possibly periodic stars in the monitored fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVSimbad column added by the CDSmeta.codecharGroupGroup of stars (Simple eclipse, continual change, other periodic, lower quality, long period, moderate period) (1)meta.code.classcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainJmagUKIRT J-band magnitude (2)magphot.mag;em.IR.JfloatHmagUKIRT H-band magnitude (2)magphot.mag;em.IR.HfloatKmagUKIRT K-band magnitude (2)magphot.mag;em.IR.KfloatDJmagRange seen in the J filter (2)magphot.mag;arith.difffloatDKmagRange seen in the K filter (2)magphot.mag;arith.difffloatD(J-H)Peak to floor change in the J-H color index (2)magphot.color;arith.difffloatD(H-K)Peak to floor change in the H-K color index (2)magphot.color;arith.difffloatSStetson variability index for the star (3)magsrc.var.indexfloatf_PerFlag on Per (a=star with no unique period identified; b=period only in Season2; multi)meta.codecharPer? Period of the star (only for Tables 3 and 5)dtime.periodfloatnullablePer2? Second period identified (only in Table5)dtime.periodfloatnullablef_Type[?] Uncertainty on Type (?)meta.codecharType? Binary classification (E, EA, EB, EW, P, RRab, or dScu; only in Table3) (4)src.classcharG[1/5]? Period grade (0-5; only in Table5) (5)meta.codeintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar