J/MNRAS/458/3027ivo://CDS.VizieR/J/MNRAS/458/3027doi:10.26093/cds/vizier.74583027CDSMaia F.F.S.Moraux E.Joncour I.2024-08-16T20:16:10Z2016-04-04T10:21:38ZCDS support team

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

cds-question@unistra.frstellar-associationsinfrared-photometryWe provide a new view on the Cygnus-X north complex by accessing for the first time the low mass content of young stellar populations in the region. CFHT/WIRCam camera was used to perform a deep near-IR survey of this complex, sampling stellar masses down to ~0.1M_{sun}_. Several analysis tools, including a extinction treatment developed in this work, were employed to identify and uniformly characterise a dozen unstudied young star clusters in the area. Investigation of their mass distributions in low-mass domain revealed a relatively uniform log-normal IMF with a characteristic mass of 0.32+/-0.08M_{sun}_ and mass dispersion of 0.40+/-0.06. In the high mass regime, their derived slopes showed that while the youngest clusters (age<4Myr) presented slightly shallower values with respect to the Salpeter's, our older clusters (4Myr<age<18Myr) showed IMF compliant values and a slightly denser stellar population. Although possibly evidencing a deviation from an 'universal' IMF, these results also supports a scenario where these gas dominated young clusters gradually 'build up' their IMF by accreting low-mass stars formed in their vicinity during their first ~3Myr, before the gas expulsion phase, emerging at the age of ~4Myr with a fully fledged IMF. Finally, the derived distances to these clusters confirmed the existence of at least 3 different star forming regions throughout Cygnus-X north complex, at distances of 500-900pc, 1.4-1.7kpc and 3.0kpc, and revealed evidence of a possible interaction between some of these stellar populations and the Cygnus-OB2 association.2016MNRAS.458.3027Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/458/3027CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/476/1243 : Millimeter continuum mapping of Cygnus X (Motte+, 2007)J/ApJ/727/114 : BLAST 2005: a 10deg^2^ survey in Cygnus X (Roy+, 2011)J/ApJ/720/679 : Optical spectroscopy in Cygnus X region (Beerer+, 2010)J/AJ/148/11 : Infrared photometry in Cygnus-X (Kryukova+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/458/3027https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/458/3027http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/458/3027https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/458/3027https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/458/3027http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/458/3027GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/458/3027/cluster (Embedded clusters fundamental parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/458/3027/cluster?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/458/3027/cluster?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/458/3027/cluster?GETtext/xml+votable180.050000true308.8416742.3650.005555555555555556Cone search capability for table J/MNRAS/458/3027/table (Coordinates, photometry and membership of detected stars in Cygnus-X north)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/458/3027/table?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/458/3027/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/458/3027/table?GETtext/xml+votable180.050000true308.699104442.19109420.0055555555555555566/14682-14683 14693 14695 14704-147067.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/458/3027?format=asciiInfrareddefaultJ/MNRAS/458/3027/clusterEmbedded clusters fundamental parametersMasss? MF mass dispersionphys.mass;instr.dispersionfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster identification (1)meta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainpStelar densitypc**-2phys.densityinte_pStelar density uncertaintypc**-2stat.errorintrcCore radiuspcphys.size.radiusfloate_rcCore radius uncertaintypcstat.errorfloatrtTidal radiuspcphys.size.radiusfloate_rtTidal radius uncertaintypcstat.errorfloatAgeminMinimum ageMyrtime.age;stat.minintAgemaxMaximum ageMyrtime.age;stat.maxintAVExtinctionmagphys.absorptionfloate_AVExtinction uncertaintymagstat.errorfloatDistminMinimum distancekpcpos.distancefloatDistmaxMaximum distancekpcpos.distancefloatMassminMinimum masssolMassphys.massintMassmaxMaximum masssolMassphys.massintMassc? MF characteristic masssolMassphys.massfloatnullablee_Massc? MF characteristic mass uncertaintysolMassstat.errorfloatnullablee_Masss? MF mass dispersion uncertaintystat.errorfloatnullablea? MF slopearith.gradfloatnullablee_a? MF slope uncertaintystat.errorfloatnullableJ/MNRAS/458/3027/tableCoordinates, photometry and membership of detected stars in Cygnus-X northrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedJmag? J-band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? J-band magnitude uncertaintymagstat.error;phot.mag;em.IR.JfloatnullableHmag? H-band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? H-band magnitude uncertaintymagstat.error;phot.mag;em.IR.HfloatnullableKmag? K-band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? K-band magnitude uncertaintymagstat.error;phot.mag;em.IR.KfloatnullableMemb[0/12] Membership (1)meta.code.memberint