J/ApJS/206/22ivo://CDS.VizieR/J/ApJS/206/22doi:10.26093/cds/vizier.22060022CDSChen X.Gan C.-G.Ellingsen S.P.He J.-H.Shen Z.-Q.Titmarsh A.2017-06-20T13:17:07Z2013-11-18T08:22:42ZCDS support team

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

cds-question@unistra.frinterstellar-mediumradio-astronomyyoung-stellar-objectsWe have undertaken a survey of molecular lines in the 3mm band toward 57 young stellar objects using the Australia Telescope National Facility Mopra 22m radio telescope. The target sources were young stellar objects with active outflows (extended green objects (EGOs)) newly identified from the GLIMPSE II survey. We observe a high detection rate (50%) of broad line wing emission in the HNC and CS thermal lines, which combined with the high detection rate of class I methanol masers toward these sources (reported in Paper I, Cat. J/ApJS/206/9) further demonstrates that the GLIMPSE II EGOs are associated with outflows. The physical and kinematic characteristics derived from the 3mm molecular lines for these newly identified EGOs are consistent with these sources being massive young stellar objects with ongoing outflow activity and rapid accretion. These findings support our previous investigations of the mid-infrared properties of these sources and their association with other star formation tracers (e.g., infrared dark clouds, methanol masers and millimeter dust sources) presented in Paper I. The high detection rate (64%) of the hot core tracer CH_3_CN reveals that the majority of these new EGOs have evolved to the hot molecular core stage. Comparison of the observed molecular column densities with predictions from hot core chemistry models reveals that the newly identified EGOs from the GLIMPSE II survey are members of the youngest hot core population, with an evolutionary time scale of the order of 10^3^yr.2013ApJS..206...22Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/206/22CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/206/9 : EGOs from Spitzer GLIMPSE II survey. Paper I. (Chen+, 2013)J/ApJS/202/1 : 1mm spectral line survey toward GLIMPSE EGOs (He+, 2012)J/ApJS/196/9 : 95GHz methanol maser survey toward GLIMPSE EGOs (Chen+, 2011)J/ApJ/710/150 : Molecular lines in EGOs (Chen+, 2010)J/ApJ/702/1615 : CH_3_OH maser survey of EGOs (Cyganowski+, 2009)J/AJ/136/2391 : GLIMPSE Extended Green Objects catalog (Cyganowski+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/206/22https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/206/22http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/206/22https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/206/22https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/206/22http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/206/22GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/206/22/EGOs (The extended green objects (EGOs) studied)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/206/22/EGOs?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/206/22/EGOs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/206/22/EGOs?GETtext/xml+votable180.050000true267.1075-29.2013890.0055555555555555566/28806 28809 28812 28814 28815 28824 28825 28828 28830 28875 28879 28896 28901 28912 28918 28919 29088 42437 42439 42445 42450 42451 42454 42456 42457 42460 42461 42462https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/206/22?format=asciiRadiodefaultJ/ApJS/206/22/EGOsThe extended green objects (EGOs) studiedSimbadNameSimbad column added by the CDSmeta.idchardv2[-0.69/0.8] HNC line asymmetry from {delta}v methodmeta.notefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOEGO name (GLLL.ll+B.bb)meta.id;meta.maincharprimaryf_EGO[a] Multiple EGOs observed (G1)meta.codecharRAJ2000[17/18] Hour of right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000[20/38] Degree of declination (J2000) (1)pos.eq.dec;meta.mainDist[0.5/11.2] Distance to the source (from Paper I)kpcpos.distance;pos.heliocentricfloatIRDC[Y/N] Association with an IR dark cloud (from Paper I)?meta.codecharIImas[Y/N] Association with a class II methanol maser (from Paper I)?meta.codecharImas[YN-] Association with a class I methanol maser (from Paper I)?meta.codecharH2O[YN-] Association with a 22GHz H_2_O maser?meta.codechar8um[Y/N] Association with a Spitzer/IRAC 8um source?meta.codecharMSX[Y/N] Association with a MSX 8um source?meta.codecharPapIDisplay the data from Paper I (J/ApJS/206/9)meta.ref.urlcharTex1[3.1/7.7] CS excitation temperatureKphys.atmol.excitationfloate_Tex1Uncertainty in Tex1Kstat.errorfloatf_Tex1[b] Flag on Tex1 (2)meta.codechartau1[0.07/0.66]? C^34^S optical depth (3)phys.absorption.opticalDepthfloatnullablee_tau1? Uncertainty in tau1 (3)stat.errorfloatnullableN1[0.2/8.1]? C^34^S beam-averaged column density (3)1e+13cm**-2phys.columnDensityfloatnullablee_N1? Uncertainty in N1 (3)1e+13cm**-2stat.errorfloatnullabletau2[0.03/0.38]? ^13^CS optical depth (3)phys.absorption.opticalDepthfloatnullablee_tau2? Uncertainty in tau2 (3)stat.errorfloatnullableN2[1.6/27]? ^13^CS beam-averaged column density (3)1e+12cm**-2phys.columnDensityfloatnullablee_N2? Uncertainty in N2 (3)1e+12cm**-2stat.errorfloatnullableTex2[2.9/27.3] N_2_H^+^ excitation temperatureKphys.atmol.excitationfloate_Tex2Uncertainty in Tex2Kstat.errorfloatf_Tex2[c] Assumed Tex2 (2)meta.codechartau3[0.01/3.82]? N_2_H^+^ optical depth (3)phys.absorption.opticalDepthfloatnullablee_tau3? Uncertainty in tau3 (3)stat.errorfloatnullableN3[0.1/8.3]? N_2_H^+^ beam-averaged column density (3)1e+13cm**-2phys.columnDensityfloatnullablee_N3? Uncertainty in N3 (3)1e+13cm**-2stat.errorfloatnullableTrot4[3.9/15.5] CH_3_OH rotational temperatureKphys.temperaturefloate_Trot4Uncertainty in Trot4Kstat.errorfloatf_Trot4[d] Assumed Trot4 (2)meta.codecharN4[0/22.1] CH_3_OH beam-averaged column density1e+14cm**-2phys.columnDensityfloate_N4Uncertainty in N41e+14cm**-2stat.errorfloatA/E[0.57/2.73]? CH_3_OH column density ratio (4)phys.density;arith.ratiofloatnullableTrot5[10.9/76]? CH_3_CN rotational temperature (3)Kphys.temperaturefloatnullablee_Trot5? Uncertainty in Trot5Kstat.errorfloatnullablef_Trot5[e] Assumed Trot5 (2)meta.codecharN5[1.6/85]? CH_3_CN beam-averaged column density (3)1e+12cm**-2phys.columnDensityfloatnullablee_N5? Uncertainty in N5 (3)1e+12cm**-2stat.errorfloatnullableN6[2.7/17.2]? CH_3_CHO beam-averaged column density (3)1e+12cm**-2phys.columnDensityfloatnullablee_N6? Uncertainty in N6 (3)1e+12cm**-2stat.errorfloatnullableN7[0.2/21.7]? HC_3_N beam-averaged column density (3)1e+12cm**-2phys.columnDensityfloatnullablee_N7? Uncertainty in N7 (3)1e+12cm**-2stat.errorfloatnullabledv1[-0.95/0.72] CS line asymmetry from {delta}v method (5)meta.notefloate_dv1Uncertainty in dv1stat.errorfloatA1[0.2/2.7]? CS line asymmetry from T_MB(B)_/T_MB(R)_ method (6)meta.notefloatnullablee_A1? Uncertainty in A1stat.errorfloatnullablep1[BNR] CS line profile: Blue, Non-asymmetric or Redmeta.notechare_dv2Uncertainty in dv2stat.errorfloatA2[0.2/3.5]? HNC line asymmetry from T_MB(B)_/T_MB(R)_ method (6)meta.notefloatnullablee_A2? Uncertainty in A2stat.errorfloatnullablep2[BNR] HNC line profile: Blue, Non-asymmetric or Redmeta.notecharp[BNR] Combined profile (7)meta.notecharJ/ApJS/206/22/table4CS line parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharf_EGO[ ,a-d] Flag(s) on EGO (1)meta.codecharV[-96/154]? Gaussian fit local standard of rest velocitykm/sspect.dopplerVelocfloatnullablee_V? Uncertainty in Vkm/sstat.error;pos.cartesian.yfloatnullabledV[1/7.5]? Gaussian fit FWHM line widthkm/sspect.line.widthfloatnullablee_dV? Uncertainty in dVkm/sstat.errorfloatnullableInt[0.5/35]? Gaussian fit integrated intensityK.km/sspect.line.intensityfloatnullablee_Int? Uncertainty in IntK.km/sstat.errorfloatnullableTmb[0.3/6.3]? Gaussian fit amplitude (T_MB_ scale)Kobs.paramfloatnullableVp[-98/154]? Peak position local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullableTp[0.3/5.4]? Peak position amplitude (2)Kobs.paramfloatnullableJ/ApJS/206/22/table5HNC line parameterse_V? Uncertainty in Vkm/sstat.error;pos.cartesian.yfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharf_EGO[ ,a-d] Flag(s) on EGO (1)meta.codecharV[-96/154]? Gaussian fit local standard of rest velocitykm/sspect.dopplerVelocfloatnullabledV[1/7.5]? Gaussian fit FWHM line widthkm/sspect.line.widthfloatnullablee_dV? Uncertainty in dVkm/sstat.errorfloatnullableInt[0.5/35]? Gaussian fit integrated intensityK.km/sspect.line.intensityfloatnullablee_Int? Uncertainty in IntK.km/sstat.errorfloatnullableTmb[0.3/6.3]? Gaussian fit amplitude (T_MB_ scale)Kobs.paramfloatnullableVp[-98/154]? Peak position local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullableTp[0.3/5.4]? Peak position amplitude (2)Kobs.paramfloatnullableJ/ApJS/206/22/table7CH_3_OH line parameters from Gaussian fitsf_EGO[ab] Flag on EGO (1)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharV[-96/154] Line center local standard of rest velocity (2)km/sspect.dopplerVelocfloate_VUncertainty in Vkm/sstat.error;pos.cartesian.yfloatdV[0.46/5.96] FWHM line width (2)km/sspect.line.widthfloate_dVUncertainty in dVkm/sstat.errorfloatInt1[0.1/14.2]? Integrated intensity of 2_-1,2_-1_-1,1_ E transition (3)K.km/sspect.line.intensityfloatnullablee_Int1? Uncertainty in Int1 (3)K.km/sstat.errorfloatnullableTmb1[0.08/2.69]? Amplitude of 2_-1,2_-1_-1,1_ E transition (3)Kobs.paramfloatnullableInt2Integrated intensity of 2_0,2_-1_0,1_ A+ transitionK.km/sspect.line.intensityfloate_Int2Uncertainty in Int2K.km/sstat.errorfloatTmb2Amplitude of 2_0,2_-1_0,1_ A+ transitionKobs.paramfloatInt3? Integrated intensity of 2_0,2_-1_0,1_ E transition (3)K.km/sspect.line.intensityfloatnullablee_Int3? Uncertainty in Int3 (3)K.km/sstat.errorfloatnullableTmb3? Amplitude of 2_0,2_-1_0,1_ E transition (3)Kobs.paramfloatnullableInt4? Integrated intensity of 2_1,1_-1_1,0_ E transition (3)K.km/sspect.line.intensityfloatnullablee_Int4? Uncertainty in Int4 (3)K.km/sstat.errorfloatnullableTmb4? Amplitude of 2_1,1_-1_1,0_ E transition (3)Kobs.paramfloatnullableInt5? Integrated intensity of 2_1,2_-1_1,1_ A+ transition (3)K.km/sspect.line.intensityfloatnullablee_Int5? Uncertainty in Int5 (3)K.km/sstat.errorfloatnullableTmb5? Amplitude of 2_1,2_-1_1,1_ A+ transition (3)Kobs.paramfloatnullableJ/ApJS/206/22/table8CH_3_CN line parameters from Gaussian fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharf_EGO[a] Multiple EGOs observed (G1)meta.codecharV[-95.5/155] Line center local standard of rest velocity (2)km/sspect.dopplerVelocfloate_VUncertainty in Vkm/sstat.error;pos.cartesian.yfloatdV[1.46/6.18] FWHM line width (2)km/sspect.line.widthfloate_dVUncertainty in dVkm/sstat.errorfloatInt1[0.15/4.43] Integrated intensity of 5_0_-4_0_ transitionK.km/sspect.line.intensityfloate_Int1Uncertainty in Int1K.km/sstat.errorfloatTmb1[0.05/0.67] Amplitude of 5_0_-4_0_ transitionKobs.paramfloatInt2? Integrated intensity of 5_1_-4_1_ transition (3)K.km/sspect.line.intensityfloatnullablee_Int2? Uncertainty in Int2 (3)K.km/sstat.errorfloatnullableTmb2? Amplitude of 5_1_-4_1_ transition (3)Kobs.paramfloatnullableInt3? Integrated intensity of 5_2_-4_2_ transition (3)K.km/sspect.line.intensityfloatnullablee_Int3? Uncertainty in Int3 (3)K.km/sstat.errorfloatnullableTmb3? Amplitude of 5_2_-4_2_ transition (3)Kobs.paramfloatnullableInt4? Integrated intensity of 5_3_-4_3_ transition (3)K.km/sspect.line.intensityfloatnullablee_Int4? Uncertainty in Int4 (3)K.km/sstat.errorfloatnullableTmb4? Amplitude of 5_3_-4_3_ transition (3)Kobs.paramfloatnullableInt5? Integrated intensity of 5_4_-4_4_ transition (3)K.km/sspect.line.intensityfloatnullablee_Int5? Uncertainty in Int5 (3)K.km/sstat.errorfloatnullableTmb5? Amplitude of 5_4_-4_4_ transition (3)Kobs.paramfloatnullableJ/ApJS/206/22/table9CH_3_CHO line parameters from Gaussian fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharf_EGO[a] Multiple EGOs observed (G1)meta.codecharV[-96/40] Line center local standard of rest velocity (2)km/sspect.dopplerVelocfloate_VUncertainty in Vkm/sstat.error;pos.cartesian.yfloatdV[1.94/6.03] FWHM line width (2)km/sspect.line.widthfloate_dVUncertainty in dVkm/sstat.errorfloatInt1[0.09/0.81]? Integrated intensity of 5_0,5_-4_0,4_ A++ transition (3)K.km/sspect.line.intensityfloatnullablee_Int1? Uncertainty in Int1 (3)K.km/sstat.errorfloatnullableTmb1[0.03/0.19]? Amplitude of 5_0,5_-4_0,4_ A++ transition (3)Kobs.paramfloatnullableInt2[0.1/0.6]? Integrated intensity of 5_0,5_-4_0,4_ E transition (3)K.km/sspect.line.intensityfloatnullablee_Int2? Uncertainty in Int2 (3)K.km/sstat.errorfloatnullableTmb2[0.03/0.16]? Amplitude of 5_0,5_-4_0,4_ E transition (3)Kobs.paramfloatnullableJ/ApJS/206/22/table10N_2_H^+^ line parameters from Gaussian fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharf_EGO[ab] Flag on EGO (1)meta.codecharV[-96/154] Line center local standard of rest velocitykm/sspect.dopplerVelocfloate_VUncertainty in Vkm/sstat.error;pos.cartesian.yfloatdV1[0.76/4.75]? FWHM line width of 1_0_-0_1_ Group 1 transition (2)km/sspect.line.widthfloatnullablee_dV1? Uncertainty in dV1 (2)km/sstat.errorfloatnullableInt1[0.1/5.8]? Integrated intensity of 1_0_-0_1_ Group 1 transition (2)K.km/sspect.line.intensityfloatnullablee_Int1? Uncertainty in Int1 (2)K.km/sstat.errorfloatnullableTmb1[0.03/1.94]? Amplitude of 1_0_-0_1_ Group 1 transition (2)Kobs.paramfloatnullabledV2FWHM line width of 1_2_-0_1_ Group 2 transitionkm/sspect.line.widthfloate_dV2Uncertainty in dV2km/sstat.errorfloatInt2Integrated intensity of 1_2_-0_1_ Group 2 transitionK.km/sspect.line.intensityfloate_Int2Uncertainty in Int2K.km/sstat.errorfloatTmb2Amplitude of 1_2_-0_1_ Group 2 transitionKobs.paramfloatdV3FWHM line width of 1_1_-0_1_ Group 3 transitionkm/sspect.line.widthfloate_dV3Uncertainty in dV3km/sstat.errorfloatInt3Integrated intensity of 1_1_-0_1_ Group 3 transitionK.km/sspect.line.intensityfloate_Int3Uncertainty in Int3K.km/sstat.errorfloatTmb3Amplitude of 1_1_-0_1_ Group 3 transitionKobs.paramfloatJ/ApJS/206/22/table11Gaussian fits to CS, HNC and HC_3_N line wingsf_Int1CS remark (3)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharf_EGO[ab] Flag on EGO (1)meta.codecharV1[-98/40]? CS line center local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullablee_V1? Uncertainty in V1 (2)km/sstat.errorfloatnullabledV1[5/20]? CS FWHM line width (2)km/sspect.line.widthfloatnullablee_dV1? Uncertainty in dV1 (2)km/sstat.errorfloatnullableInt1[0.75/10.94]? CS integrated intensity (2)K.km/sspect.line.intensityfloatnullablee_Int1? Uncertainty in Int1 (2)K.km/sstat.errorfloatnullableV2[-98/38]? HNC line center local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullablee_V2? Uncertainty in V2 (2)km/sstat.errorfloatnullabledV2[1.6/13.4]? HNC FWHM line width (2)km/sspect.line.widthfloatnullablee_dV2? Uncertainty in dV2 (2)km/sstat.errorfloatnullableInt2[0.78/8.73]? HNC integrated intensity (2)K.km/sspect.line.intensityfloatnullablee_Int2? Uncertainty in Int2 (2)K.km/sstat.errorfloatnullablef_Int2HNC remark (3)meta.codecharV3[-35/13]? HC_3_N line center local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullablee_V3? Uncertainty in V3 (2)km/sstat.errorfloatnullabledV3[4/10]? HC_3_N FWHM line width (2)km/sspect.line.widthfloatnullablee_dV3? Uncertainty in dV3 (2)km/sstat.errorfloatnullableInt3[0.68/3.39]? HC_3_N integrated intensity (2)K.km/sspect.line.intensityfloatnullablee_Int3? Uncertainty in Int3 (2)K.km/sstat.errorfloatnullablef_Int3HC_3_N remark (3)meta.codecharJ/ApJS/206/22/table6C^34^S, ^13^CS and HC_3_N line parameters from Gaussian fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEGOSource namemeta.id;meta.maincharf_EGO[ ,a-c] Flag(s) on EGO (1)meta.codecharV1[-96/153.6]? C^34^S line center local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullablee_V1? Uncertainty in V1 (2)km/sstat.errorfloatnullabledV1? C^34^S FWHM line width (2)km/sspect.line.widthfloatnullablee_dV1? Uncertainty in dV1 (2)km/sstat.errorfloatnullableInt1? C^34^S integrated intensity (2)K.km/sspect.line.intensityfloatnullablee_Int1? Uncertainty in Int1 (2)K.km/sstat.errorfloatnullableTmb1? C^34^S amplitude (2)Kobs.paramfloatnullableV2[-96/41]? ^13^CS line center local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullablee_V2? Uncertainty in V2 (2)km/sstat.errorfloatnullabledV2? ^13^CS FWHM line width (2)km/sspect.line.widthfloatnullablee_dV2? Uncertainty in dV2 (2)km/sstat.errorfloatnullableInt2? ^13^CS integrated intensity (2)K.km/sspect.line.intensityfloatnullablee_Int2? Uncertainty in Int2 (2)K.km/sstat.errorfloatnullableTmb2? ^13^CS amplitude (2)Kobs.paramfloatnullableV3[-96/40]? HC_3_N line center local standard of rest velocity (2)km/sspect.dopplerVelocfloatnullablee_V3? Uncertainty in V3 (2)km/sstat.errorfloatnullabledV3? HC_3_N FWHM line width (2)km/sspect.line.widthfloatnullablee_dV3? Uncertainty in dV3 (2)km/sstat.errorfloatnullableInt3? HC_3_N integrated intensity (2)K.km/sspect.line.intensityfloatnullablee_Int3? Uncertainty in Int3 (2)K.km/sstat.errorfloatnullableTmb3? HC_3_N amplitude (2)Kobs.paramfloatnullable