J/MNRAS/472/2990ivo://CDS.VizieR/J/MNRAS/472/2990doi:10.26093/cds/vizier.74722990CDSLucas P.W.Smith L.C.Contreras Pena C.Froebrich D.Drew J.E.,Kumar M.S.N.Borissova J.Minniti D.Kurtev R.Monguio M.2024-08-17T20:20:55Z2023-04-04T14:10:43ZCDS support team

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

cds-question@unistra.frinfrared-sourcesyoung-stellar-objectsvariable-starsinfrared-photometrymillimeter-astronomyphotometrysubmillimeter-astronomyWe present a catalogue of 618 high-amplitude infrared variable stars (1<{Delta}K<5mag) detected by the two widely separated epochs of 2.2{mu}m data in the UKIDSS Galactic plane survey, from searches covering ~1470deg^2^. Most were discovered by a search of all fields at 30<l<230{deg}. Sources include new dusty Mira variables, three new cataclysmic variable candidates, a blazar and a peculiar source that may be an interacting binary system. However, ~60 per cent are young stellar objects (YSOs), based on spatial association with star-forming regions at distances ranging from 300pc to over 10kpc. This confirms our initial result in Contreras Pena et al. (2014MNRAS.439.1829C, Paper I) that YSOs dominate the high-amplitude infrared variable sky in the Galactic disc. It is also supported by recently published VISTA Variables in the Via Lactea (VVV) results at 295<l<350{deg}. The spectral energy distributions of the YSOs indicate class I or flat-spectrum systems in most cases, as in the VVV sample. A large number of variable YSOs are associated with the Cygnus X complex and other groups are associated with the North America/Pelican nebula, the Gemini OB1 molecular cloud, the Rosette complex, the Cone nebula, the W51 star-forming region and the S86 and S236 H II regions. Most of the YSO variability is likely due to variable/episodic accretion on time-scales of years, albeit usually less extreme than classical FUors and EXors. Luminosities at the 2010 Wide-field Infrared Survey Explorer epoch range from ~0.1 to 10^3^L_{sun}_ but only rarely exceed 10^2.5^L_{sun}_.2017MNRAS.472.2990Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/472/2990CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/472/2990https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/472/2990http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/472/2990https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/472/2990https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/472/2990http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/472/2990GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/472/2990/table1 (Catalogue of 618 high-amplitude IR variable stars from UGPS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/472/2990/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/472/2990/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/472/2990/table1?GETtext/xml+votable180.050000true51.861158.75240.005555555555555556Cone search capability for table J/MNRAS/472/2990/table3 (New pre-MS clusters associated with individual variable stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/472/2990/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/472/2990/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/472/2990/table3?GETtext/xml+votable180.050000true52.51755.7720.0055555555555555565/3655 3657 3661 3672-3673 3676 7604-7605 7651 6/1287 1289 1297 1299 1304 1307-1308 1336 1344 1346 1352 1354 1380 1385 1412 1428 1433 1451 1759 1781-1782 1788 1790 1795 1804 1827 1930 1932 3156-3157 3159 3162 3184 3186 3196 3198 12938 12952 12960 12963 12970-12971 12974 12987 12991 13002 13032-13033 13035 13038-13039 13050 13053 13996 13999 14010 14014 14029 14063 14074 14216 14236 14255 14266-14267 14270 14336-14337 14340-14341 14345 14348 14352-14354 14356 14360 14385 14400 14402-14403 14406 14409-14410 14412-14414 14416 14422-14424 14430 14441 14447 14453-14455 14533 14592 14600 14603-14605 14607 14615 14617-14618 14624 14626 14633 14636-14637 14640-14642 14652 14663-14664 14666-14667 14670 14674 14682-14685 14687 14696 14698 14700 14709 14715-14716 14719 15361-15362 15368-15370 15375 15379 15382-15383 15386 15391 15398 15403 15413 15416-15417 15430-15431 15433-15434 15437 15442 15449 15454 15458 15460 15462 15469 15473-15475 15478 15617-15618 15621 15633-15634 15636 21549 21552 21655 21687 22020 22022 22032 22038 22041 22045 22066 22070 22088 22122 22124 22126 22164 22209 22242-22243 22245-22246 22248-22250 22252 22270 23635-23637 23639 23669 23766 23773 23775 23944 23946 23953 23966 23968-23969 23972 23980 23982-23983 24151 24325 24329 24346 24378 24383 24424 24426 24430 24472 24507 24510 24513 24545-24546 24554 29459 29507 29513-29515 29543 29559 29865-29866 29883 30210 30221 30243 30260 30262-30263 30266 30268-30269 30302 30315-30318 30328 30330-30331 30341 30401 30405 30429 30450 30452 30506 30526 30592 30594 30598-30599 30602-30603 30616 30618 30621 30623-30625 30636-30637 30644-30646 30648-30649 30652 30664 30667 30671 30687 30689-30692 30694-30695 30701-30703 30705-30706 30710 30712 30714-30718 32084-32085 320898.157980699529898e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/472/2990?format=asciiInfraredMillimeterdefaultJ/MNRAS/472/2990/table1Catalogue of 618 high-amplitude IR variable stars from UGPSSimbadNameSimbad column added by the CDSmeta.idcharnullableGroupSpatial Group (4)meta.idcharSEDclassSpectral index-based YSO classmeta.code.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning number, in RA ordermeta.idintRAJ2000Rigth ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleJmag? UKIDSS GPS J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? UKIDSS GPS J magnitude errormagstat.error;phot.magdoublenullableHmag? UKIDSS GPS H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? UKIDSS GPS H magnitude errormagstat.error;phot.magdoublenullableKcmag? UKIDSS GPS Kc (K filter, contemporaneous with J and H)magphot.mag;em.IR.Jfloatnullablee_Kcmag? UKIDSS GPS Kc (K filter, contemporaneous with J and H) errormagstat.error;phot.magdoublenullableKomag? UKIDSS GPS Ko (K filter, measured at a different epoch)magphot.mag;em.IR.Jfloatnullablee_Komag? UKIDSS GPS Ko (K filter, measured at a different epoch) errormagstat.error;phot.magdoublenullableMJDa? Modified Julian dates of epoch adtime.epochdoublenullableMJDb? Modified Julian dates of epoch bdtime.epochdoublenullableSatFlagJ[0/1] Saturation warning flag for J (2)meta.codeintSatFlagH[0/1] Saturation warning flag for H (2)meta.codeintSatFlagKc[0/1] Saturation warning flag for Kc (2)meta.codeintSatFlagKo[0/1] Saturation warning flag for Ko (2)meta.codeintAmpKUKIDSS GPS two epoch amplitude in Kmagsrc.var.amplitudedoubleAmpKallAmplitude in K (Kmax-Kmin) include 2MASS Ks data where availablemagsrc.var.amplitudedoubleDist? Distancekpcpos.distancefloatnullablealpha? 2 to 22 micron spectral index, d(log({lambda}F{lambda}))/d(log({lambda}))spect.indexdoublenullablermag? IPHAS or VPHAS+ r magmagphot.mag;em.opt.Rfloatnullableimag? IPHAS or VPHAS+ i magmagphot.mag;em.opt.IfloatnullableHamag? IPHAS or VPHAS+ Halpha magmagphot.flux;em.line.HalphafloatnullableMJD? IPHAS or VPHAS+ modified Julian Datedtime.epochintnullableJ2mag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableH2mag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKs2mag? 2MASS Ks magnitudemagphot.mag;em.IR.KfloatnullableW1mag? WISE W1 magnitudemagphot.mag;em.IR.3-4umfloatnullableW2mag? WISE W2 magnitudemagphot.mag;em.IR.4-8umfloatnullableW3mag? WISE W3 magnitudemagphot.flux.density;em.IR.8-15umfloatnullableW4mag? WISE W4 magnitudemagphot.flux.density;em.IR.15-30umfloatnullable24mag? MIPS 24um magnitudemagphot.flux.density;em.IR.15-30umfloatnullableI1mag? Spitzer/IRAC 3.6um magnitudemagphot.mag;em.IR.3-4umdoublenullableI2mag? Spitzer/IRAC 4.5um magnitudemagphot.mag;em.IR.4-8umdoublenullableI3mag? Spitzer/IRAC 5.8um magnitudemagphot.flux.density;em.IR.4-8umfloatnullableI4mag? Spitzer/IRAC 8.0um magnitudemagphot.flux.density;em.IR.8-15umfloatnullableF70? PACS 70 microns fluxmJyphot.flux.density;em.IR.30-60umdoublenullableUGPSUGPS coordinate-based source designationmeta.id;meta.maincharONameOther Namemeta.idcharEpKc[abc] Kc epoch indicator (a, b or c for 1st, 2nd or 3rd in time order)meta.codecharn_EpKc[*] Note on EpKc (1)meta.notecharBadFlag[Kc Ko] Bad pixel flag (3)meta.codecharTypeType, likely type of astronomical objectmeta.note;src.morph.typecharr_DistReference for Distmeta.ref;pos.framecharAssocInformation about the source or its locationmeta.id.parentcharr_AssocReference for associationmeta.ref;pos.framecharJ/MNRAS/472/2990/table3New pre-MS clusters associated with individual variable starsComCommentmeta.notecharDist? Distancekpcpos.distancefloatnullableRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCluster[1/18] Cluster sequential numbermeta.id;meta.mainintSourceSource numbermeta.idintDEJ2000Declination (J2000)degpos.eq.dec;meta.mainJ/MNRAS/472/2990/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar