J/ApJS/234/8ivo://CDS.VizieR/J/ApJS/234/8doi:10.26093/cds/vizier.22340008CDSMakin S.V.Froebrich D.2018-05-17T12:17:01Z2018-04-17T12:56:30ZCDS support team

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

cds-question@unistra.frinterstellar-mediumyoung-stellar-objectsinfrared-photometryWe have performed an unbiased search for outflows from young stars in Cygnus-X using 42deg^2^ of data from the UKIRT Widefield Infrared Survey for H_2_ (UWISH2 Survey), to identify shock-excited near-IR H_2_ emission in the 1-0 S(1) 2.122{mu}m line. We uncovered 572 outflows, of which 465 are new discoveries, increasing the number of known objects by more than 430%. This large and unbiased sample allows us to statistically determine the typical properties of outflows from young stars. We found 261 bipolar outflows, and 16% of these are parsec scale. The typical bipolar outflow is 0.45pc in length and has gaps of 0.025-0.1pc between large knots. The median luminosity in the 1-0 S(1) line is 10^-3^L_{sun}_. The bipolar flows are typically asymmetrical, with the two lobes misaligned by 5{deg}, one lobe 30% shorter than the other, and one lobe twice as bright as the other. Of the remaining outflows, 152 are single- sided and 159 are groups of extended, shock-excited H2 emission without identifiable driving sources. Half of all driving sources have sufficient WISE data to determine their evolutionary status as either protostars (80%) or classical T Tauri stars (20%). One-fifth of the driving sources are variable by more than 0.5mag in the K-band continuum over several years. Several of the newly identified outflows provide excellent targets for follow-up studies. We particularly encourage the study of the outflows and young stars identified in a bright-rimmed cloud near IRAS 20294+4255, which seems to represent a textbook example of triggered star formation.2018ApJS..234....8Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/234/8CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/297 : AKARI/IRC mid-IR all-sky Survey (ISAS/JAXA, 2010)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)II/316 : UKIDSS-DR6 Galactic Plane Survey (UGPS) (Lucas+ 2012)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)II/328 : AllWISE Data Release (Cutri+ 2013)J/A+A/241/551 : Radio continuum in Cygnus X region (Wendker+ 1991)J/A+A/392/239 : IR survey of outflows in Orion A (Stanke+, 2002)J/A+A/472/187 : 12CO outflows towards submm cores in Per (Hatchell+, 2007)J/MNRAS/387/954 : H2 imaging of NGC 1333, L1455, L1448 and B1 (Davis+, 2008)J/A+A/496/153 : Molecular hydrogen flows along Ori A cloud (Davis+, 2009)J/A+A/511/A24 : MHO Catalogue (Davis+, 2010)J/ApJS/188/123 : The Bolocam Galactic Plane Survey. II. (Rosolowsky+, 2010)J/MNRAS/404/661 : Young stellar outflows near-IR imaging (Varricatt+ 2010)J/ApJS/193/25 : The NAN complex. II. MIPS observations (Rebull+, 2011)J/MNRAS/418/1689 : Red MSX water maser and ammonia emissions (Urquhart+, 2011)J/MNRAS/421/3257 : MHO catalogue for Serpens and Aquila (Ioannidis+, 2012)J/A+A/551/A43 : AFGL 2591 multi-wavelength maps (Johnston+, 2013)J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+, 2013)J/other/ApSS/344.175 : Protoclusters and subclusters (Majaess, 2013)J/AJ/148/11 : Infrared photometry in Cygnus-X (Kryukova+, 2014)J/MNRAS/454/2586 : UWISH2 extended H2 emission line sources (Froebrich+, 2015)J/AJ/150/191 : IR photom. of YSOs in Cygnus-X DR15 (Rivera-Galvez+, 2015)http://astro.kent.ac.uk/~df/MHCat/index.html : MHO online cataloguehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/234/8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/234/8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/234/8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/234/8https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/234/8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/234/8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/234/8/table1 (List of outflows)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/234/8/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/234/8/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/234/8/table1?GETtext/xml+votable180.050000true314.379916744.04377780.0055555555555555565/3661 3666 3669 3670 3672 3673 3676 6/14619 14621 14622 14623 14640 14641 14652 14653 14655 14668 14670 14671 14675 14685 14686 14687 14697 14698 14700 14701 14709 14712 15362 15363 15368 15369 153708.157980699529898e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/234/8?format=asciiInfrareddefaultJ/ApJS/234/8/table1List of outflowsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOF[001/599] Outflow numbermeta.id;meta.mainintMHOMHO number(s) (1)meta.id.assoccharRAJ2000[20] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[36/45] Degree of Declination (J2000)pos.eq.dec;meta.mainLength1[0.0007/0.07]? Length of outflow lobe 1 (2)degphys.angSize;srcdoublenullableLength2[0.0005/0.09]? Length of outflow lobe 2degphys.angSize;srcdoublenullablePA1[1/356]? Position angle of outflow lobe 1, degrees from north over east (2)degpos.posAngfloatnullablePA2[174/360]? Position angle of outflow lobe 2, degrees from north over east (2)degpos.posAngfloatnullableFlux1[5/72454] Integrated H_2_ flux of outflow lobe 1 (or collected knots) at 2.122um (2)1e-19W.m**-2phot.mag;em.IR.KintFlux2[3/79817]? Integrated H_2_ flux of outflow lobe 2 at 2.122um (2)1e-19W.m**-2phot.mag;em.IR.KintnullableCl*[YN] Associated with star cluster or group?meta.codecharSOutflow type (3)meta.codecharSourceCandidate driving source identifiermeta.id.parentcharCL[0/95] Confidence level in driving source candidate%stat.fit.param;phys.atmol.level;arith.ratiointJmagUG[10.8/20.7]? NIR J-band UGPS magnitude (4)magphot.mag;em.IR.JfloatnullableHmagUG[10.9/20]? NIR H-band UGPS magnitude (4)magphot.mag;em.IR.HfloatnullableK1magUG[9.5/18.3]? NIR K-band UGPS magnitude (epoch 1) (4)magphot.mag;em.IR.KfloatnullableK2magUG[9.3/18.2]? NIR K-band UGPS magnitude (epoch 2) (4)magphot.mag;em.IR.KfloatnullableJmag2M[8/19]? NIR 2MASS J-band magnitude (5)magphot.mag;em.IR.JfloatnullableHmag2M[7/17.7]? NIR 2MASS H-band magnitude (5)magphot.mag;em.IR.HfloatnullableKsmag2M[6/15.2]? NIR 2MASS Ks-band magnitude (5)magphot.mag;em.IR.KfloatnullableW1mag[-0.2/17.5]? MIR WISE W1 (3.4um) magnitude (6)magphot.mag;em.IR.3-4umfloatnullableW2mag[-0.9/16.5]? MIR WISE W2 (4.6um) magnitude (6)magphot.mag;em.IR.4-8umfloatnullableW3mag[-3/12.5]? MIR WISE W3 (12um) magnitude (6)magphot.flux.density;em.IR.8-15umfloatnullableW4mag[-4.2/9.1]? MIR WISE W4 (22um) magnitude (6)magphot.flux.density;em.IR.15-30umfloatnullableCatCandidate driving source all sky catalogs (7)meta.codechar2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 1"meta.ref.urlcharWISEADisplay the AllWISE data (Cutri+ 2013, II/328) within 3"meta.ref.urlcharUGPSDisplay the UKIDSS-DR6 Galactic Plane Survey data (Lucas+ 2012, II/316) within 1"meta.ref.urlchar