J/ApJS/175/191ivo://CDS.VizieR/J/ApJS/175/191doi:10.26093/cds/vizier.21750191CDSPlavchan P.Jura M.Kirkpatrick J.D.Cutri R.M.Gallagher S.C.2017-06-22T14:28:47Z2009-08-30T13:30:05ZCDS support team

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

cds-question@unistra.frvariable-starsinfrared-photometryThe Two Micron All Sky Survey (2MASS) photometric calibration observations cover ~6 square degrees on the sky in 35 "calibration fields", each sampled in nominal photometric conditions between 562 and 3692 times during the 4 years of the 2MASS mission. We compile a catalog of variables from the calibration observations to search for M dwarfs transited by extrasolar planets. We present our methods for measuring periodic and nonperiodic flux variability. From 7554 sources with apparent K_s_ magnitudes between 5.6 and 16.1, we identify 247 variables, including extragalactic variables and 23 periodic variables. We have discovered three M dwarf eclipsing systems, including two candidates for transiting extrasolar planets.2008ApJS..175..191Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/175/191CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/121 : Catalog of DMS-type eclipsing binaries (Svechnikov+, 1999)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/A+A/380/590 : 30 DENIS late-M dwarfs between 15 and 30pc (Phan-Bao+, 2001)J/A+A/390/267 : The CORALIE survey for extrasolar planets VIII (Udry+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/175/191https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/175/191http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/175/191https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/175/191https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/175/191http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/175/191GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/175/191/table2 (Sample Properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/175/191/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/175/191/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/175/191/table2?GETtext/xml+votable180.050000true6.0311667-1.67683330.0055555555555555565/7557 6/1582 1583 4253 4255 4298 6953 6956 7287 7293 7458 7464 9200 9202 9203 9279 9322 9408 12647 12653 12664 13640 13642 15062 15063 15068 15069 17818 17840 17841 18054 18060 18061 18572 18574 18794 18795 18881 21835 21838 21860 22869 23288 23289 23307 23310 23332 25307 25310 25332 25933 25944 25946 26255 26277 26288 28630 30233 30235 30238 31527 31538 34481 34484 35487 38951 38957 39279 39365 41977 42306 42307 42310 42316 42981 43552 43554 45053 45055 46012 46014 46015 49085 49128 49130 491318.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/175/191?format=asciiInfrareddefaultJ/ApJS/175/191/suspSuspected variables and their classificationCatColor category (1)meta.codecharB-Ks? The (B-K_s_) color indexmagphot.color;em.opt;em.IRfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASSPSC source identification (HHMMSSss+DDMMSSs)meta.id;meta.maincharProb? Probability of intrinsic variability (1)%statintnullableo_FlagsNumber of Flagsmeta.numberintFlagsVariability flags (G1)meta.code;src.varintl_JflmThe 3{sigma} limit flag on Jflmmeta.code.errorcharJflm2MASS J band flicker magnitude (2)magstat.variancefloate_Jflm? Uncertainty in Jflmmagstat.errorfloatnullablel_HflmThe 3{sigma} limit flag on Hflmmeta.code.errorcharHflm2MASS H band flicker magnitude (2)magstat.variancefloate_Hflm? Uncertainty in Hflmmagstat.errorfloatnullablel_KsflmThe 3{sigma} limit flag on Ksflmmeta.code.errorcharKsflm2MASS K_s_ band flicker magnitude (2)magstat.variancefloate_Ksflm? Uncertainty in Ksflmmagstat.errorfloatnullableneJ? 2MASS J band excursion number (3)meta.code;src.varintnullableneH? 2MASS H band excursion number (3)meta.code;src.varintnullableneKs? 2MASS K_s_ band excursion number (3)meta.code;src.varintnullableS-IndStetson Index (4)meta.code;spect.indexfloatKsmag2MASS K_s_ band magnitudemagphot.mag;em.IR.KfloatH-KsThe 2MASS (H-K_s_) color indexmagphot.color;em.IR.H;em.IR.KfloatJ-HThe 2MASS (J-H) color indexmagphot.color;em.IR.J;em.IR.HfloatNoteNote on Name (2)meta.notecharJ/ApJS/175/191/varVariables and their classificationCatColor category (1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASSPSC source identification (HHMMSSss+DDMMSSs)meta.id;meta.maincharProb? Probability of intrinsic variability (1)%statintnullableo_FlagsNumber of Flagsmeta.numberintFlagsVariability flags (G1)meta.code;src.varintl_JflmThe 3{sigma} limit flag on Jflmmeta.code.errorcharJflm2MASS J band flicker magnitude (2)magstat.variancefloate_Jflm? Uncertainty in Jflmmagstat.errorfloatnullablel_HflmThe 3{sigma} limit flag on Hflmmeta.code.errorcharHflm2MASS H band flicker magnitude (2)magstat.variancefloate_Hflm? Uncertainty in Hflmmagstat.errorfloatnullablel_KsflmThe 3{sigma} limit flag on Ksflmmeta.code.errorcharKsflm2MASS K_s_ band flicker magnitude (2)magstat.variancefloate_Ksflm? Uncertainty in Ksflmmagstat.errorfloatnullableneJ? 2MASS J band excursion number (3)meta.code;src.varintnullableneH? 2MASS H band excursion number (3)meta.code;src.varintnullableneKs? 2MASS K_s_ band excursion number (3)meta.code;src.varintnullableS-IndStetson Index (4)meta.code;spect.indexfloatKsmag2MASS K_s_ band magnitudemagphot.mag;em.IR.KfloatB-Ks? The (B-K_s_) color indexmagphot.color;em.opt;em.IRfloatnullableH-KsThe 2MASS (H-K_s_) color indexmagphot.color;em.IR.H;em.IR.KfloatJ-HThe 2MASS (J-H) color indexmagphot.color;em.IR.J;em.IR.HfloatNoteNote on Name (2)meta.notecharJ/ApJS/175/191/table2Sample PropertiesFieldField numbermeta.id;obs.fieldintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVSimbad column added by the CDSmeta.ref.urlchar2MASSPSC source identification (HHMMSSss+DDMMSSs) (1)meta.id;meta.maincharprimaryNdetNumber of detections (2)meta.numberintJmag2MASS J band magnitude (3)magphot.mag;em.IR.Jfloate_JmagUncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatHmag2MASS H band magnitude (3)magphot.mag;em.IR.Hfloate_HmagUncertainty in Hmagmagstat.error;phot.mag;em.IR.HfloatKsmag2MASS K_s_ band magnitude (3)magphot.mag;em.IR.Kfloate_KsmagUncertainty in Ksmagmagstat.error;phot.mag;em.IR.Kfloat_RAPosition (from 2MASS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (from 2MASS name) (declination part)degpos.eq.dec;meta.mainJ/ApJS/175/191/table8Periodic VariablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS-PSC Name (HHMMSSss+DDMMSSs)meta.id;meta.maincharFlagsVariability flags (G1)meta.code;src.varintPerPeriod (1)dtime.perioddoublef_Per[eg] Note on the period (2)meta.codecharPer2? 2d Period for eclipsing binary (3)dtime.perioddoublenullablePhasePhase (4)time.phasefloatFieldFieldmeta.id;obs.fieldintTypeObject Type (5)src.classcharf_Type[f] Flag on object type (6)meta.codechar