J/AJ/144/101ivo://CDS.VizieR/J/AJ/144/101doi:10.26093/cds/vizier.51440101CDSGuenther H.M.Wolk S.J.Spitzbart B.Gutermuth R.A.Forbrich J.,Wright N.J.Allen L.Bourke T.L.Megeath S.T.Pipher J.L.2017-12-07T07:26:59Z2013-11-13T14:26:23ZCDS support team

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

cds-question@unistra.frx-ray-sourcespre-main-sequence-starsstellar-associationsyoung-stellar-objectsinfrared-photometryvisible-astronomybroad-band-photometryextinctionIRAS 20050+2720 is young star-forming region at a distance of 700pc without apparent high-mass stars. We present results of our multi-wavelength study of IRAS 20050+2720 which includes observations by Chandra and Spitzer, and Two Micron All Sky Survey and UBVRI photometry. In total, about 300 young stellar objects (YSOs) in different evolutionary stages are found. We characterize the distribution of YSOs in this region using a minimum spanning tree analysis. We newly identify a second cluster core, which consists mostly of class II objects, about 10' from the center of the cloud. YSOs of earlier evolutionary stages are more clustered than more evolved objects. The X-ray luminosity function (XLF) of IRAS 20050+2720 is roughly lognormal, but steeper than the XLF of the more massive Orion Nebula complex. IRAS 20050+2720 shows a lower N_H_/A_K_ ratio compared with the diffuse interstellar medium.2012AJ....144..101Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/144/101CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2013)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/AJ/140/266 : NGC 1333 X-ray luminous YSOs properties (Winston+, 2010)J/ApJ/713/871 : Sources in star-forming region Cyg-OB2 from X-rayJ/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)J/A+A/481/93 : CO and HC3N maps of IRAS 20050+2720 (Beltran+, 2008)J/AJ/135/693 : X-ray and IR sources in RCW 108 (Wolk+, 2008)J/ApJ/675/464 : Chandra observations of NGC 2244 (Wang+, 2008)J/ApJ/677/401 : Xray properties of protostars in ONC (Prisinzano+, 2008)J/ApJ/669/493 : Spitzer/Chandra YSOs in Serpens cloud core (Winston+, 2007)J/ApJS/163/306 : Chandra study of the Cep B star-forming region (Getman+, 2006)J/AJ/132/1100 : X-ray and IR sources in RCW 38 (Wolk+, 2006)J/AJ/126/1916 : JHK photometry of young clusters near the Sun (Porras+, 2003)http://cda.harvard.edu/chaser/mainEntry.do : Chandra observation searchhttp://sha.ipac.caltech.edu/applications/Spitzer/SHA : Spitzer searchhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/144/101https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/144/101http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/144/101https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/144/101https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/144/101http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/144/101GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/144/101/table2 (X-Ray sources and spectral fits)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/101/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/101/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/101/table2?GETtext/xml+votable180.050000true301.7633361127.4821050.005555555555555556Cone search capability for table J/AJ/144/101/table3 (Optical and infra-red photometry of the sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/101/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/101/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/101/table3?GETtext/xml+votable180.050000true301.7633361127.4821050.0055555555555555566/13050 130516.772611666688002e-21 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/144/101?format=asciiX-rayOpticalInfrareddefaultJ/AJ/144/101/table2X-Ray sources and spectral fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrc[1/32824] Running X-ray source number <[GWS2012] NNNNN> in Simbad (1)meta.id;meta.mainintRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainClSource classification (G1)src.classcharNCtsNet 0.3-8keV counts in X-rayctphot.count;em.X-rayfloatFX? The 0.3-8 keV flux count rate (in 10^-7^ct/s/cm^2^)count.ks**-1.m**-2phot.flux;em.X-rayfloatnullablee_FX? Statistical error in FXcount.ks**-1.m**-2stat.errorfloatnullableNH? Hydrogen column density1e+22cm**-2phys.columnDensityfloatnullablee_NH? Statistical error in NH1e+22cm**-2stat.errorfloatnullablekT? Energy (X-ray temperature)keVphys.temperaturefloatnullablee_kT? Statistical error in kTkeVstat.error;phys.energyfloatnullableFlux? Observed 0.3-8 keV flux (in 10^-15^erg/s/cm^2^)aW.m**-2phot.flux;em.X-rayfloatnullablee_Flux? Statistical error in FluxaW.m**-2stat.error;phot.fluxfloatnullablelogLX? Log of X-ray luminosity (unabsorbed luminosity assuming a distance of 700pc)log(1e-07W)phys.luminosity;em.X-rayfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/144/101/table3Optical and infra-red photometry of the sourcesDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedUmag? FLWO SDSS U band magnitude (1)magphot.mag;em.opt.Ufloatnullablee_Umag? Statistical error in Umagmagstat.error;phot.mag;em.opt.UfloatnullableBmag? FLWO Harris B band magnitude (1)magphot.mag;em.opt.Bfloatnullablee_Bmag? Statistical error in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag? FLWO Harris V band magnitude (1)magphot.mag;em.opt.Vfloatnullablee_Vmag? Statistical error in Vmagmagstat.error;phot.mag;em.opt.VfloatnullableRmag? FLWO SDSS R band magnitude (1)magphot.mag;em.opt.Rfloatnullablee_Rmag? Statistical error in Rmagmagstat.error;phot.mag;em.opt.RfloatnullableImag? FLWO SDSS I band magnitude (1)magphot.mag;em.opt.Ifloatnullablee_Imag? Statistical error in Imagmagstat.error;phot.mag;em.opt.IfloatnullableJmag? 2MASS J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? Statistical error in Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag? 2MASS H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? Statistical error in Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKmag? 2MASS Ks band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? Statistical error in Kmagmagstat.error;phot.mag;em.IR.Kfloatnullable[3.6]? Spitzer/IRAC 3.6{mu}m band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_[3.6]? Statistical error in [3.6]magstat.errorfloatnullable[4.5]? Spitzer/IRAC 4.5{mu}m band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_[4.5]? Statistical error in [4.5]magstat.errorfloatnullable[5.8]? Spitzer/IRAC 5.8{mu}m band magnitudemagphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? Statistical error in [5.8]magstat.errorfloatnullable[8.0]? Spitzer/IRAC 8.0{mu}m band magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? Statistical error in [8.0]magstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSrc[1/40593] Running X-ray source number <[GWS2012] NNNNN> in Simbadmeta.id;meta.mainintprimaryXSimbad column added by the CDSmeta.ref.urlcharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainindexed[24]? Spitzer/MIPS 24{mu}m band magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_[24]? Statistical error in [24]magstat.errorfloatnullableHamag? IPHAS H{alpha} band magnitude (1)magphot.flux;em.line.Halphafloatnullablee_Hamag? Statistical error in Hamagmagstat.error;phot.mag;em.IR.Hfloatnullablermag? IPHAS r band magnitude (1)magphot.mag;em.opt.Rfloatnullablee_rmag? Statistical error in rmagmagstat.error;phot.mag;em.opt.Rfloatnullableimag? IPHAS i band magnitude (1)magphot.mag;em.opt.Ifloatnullablee_imag? Statistical error in imagmagstat.error;phot.mag;em.opt.IfloatnullableClSource classification (G1)src.classcharAK? Extinction in the K band (see Section 3.2)magphys.absorptionfloatnullableAVExtinction in the V band (from extinction map)magphys.absorption;em.opt.Vfloat