J/ApJS/175/509ivo://CDS.VizieR/J/ApJS/175/509doi:10.26093/cds/vizier.21750509CDSRosolowsky E.W.Pineda J.E.Foster J.B.Borkin M.A.Kauffmann J.,Caselli P.Myers P.C.Goodman A.A.2018-01-05T08:56:27Z2009-07-10T13:09:16ZCDS support team

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

cds-question@unistra.frinterstellar-mediumastronomical-object-identificationradio-astronomyWe present ammonia observations of 193 dense cores and core candidates in the Perseus molecular cloud made using the Robert F. Byrd Green Bank Telescope. We simultaneously observed the NH_3_(1,1), NH_3_(2,2), C_2_S (2_1_=>1_0_), and C^34^_2_S(2_1_=>1_0_) transitions near {nu}=23GHz for each of the targets with a spectral resolution of {delta}v~0.024km/s. We find ammonia emission associated with nearly all of the (sub)millimeter sources, as well as at several positions with no associated continuum emission. For each detection, we have measured physical properties by fitting a simple model to every spectral line simultaneously. Where appropriate, we have refined the model by accounting for low optical depths, multiple components along the line of sight, and imperfect coupling to the GBT beam. For the cores in Perseus, we find a typical kinetic temperature of T_k_=11K, a typical column density of N_NH3_~10^14.5^/cm2, and velocity dispersions ranging from {sigma}v=0.07 to 0.7km/s. However, many cores with {sigma}v>0.2km/s show evidence for multiple velocity components along the line of sight.2008ApJS..175..509Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/175/509CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/472/187 : 12CO outflows towards submm cores in Perseus (Hatchell+, 2007)J/ApJ/646/1009 : Structures of dust in Perseus molecular cloud (Kirk+, 2006)J/ApJ/638/293 : 1.1mm sources in the Perseus Molecular Cloud (Enoch+, 2006)J/ApJS/125/161 : A database of dense cores mapped in ammonia (Jijina+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/175/509https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/175/509http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/175/509https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/175/509https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/175/509http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/175/509GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/175/509/table2 (Summary of Observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/175/509/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/175/509/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/175/509/table2?GETtext/xml+votable180.050000true50.5787530.8872220.0055555555555555566/855 857 858 859 860 861 862 880 881 1538 1539 1542 1544https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/175/509?format=asciiRadiodefaultJ/ApJS/175/509/table2Summary of ObservationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_NH3SRCSimbad column added by the CDSmeta.ref.urlcharNH3SRCRunning source number (G1)meta.id;meta.mainintprimaryr_NH3SRCOrigin of source (2)meta.code;obscharRegionRegion as defined in Figure 1meta.bib.figcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainBoloEnoch et al. (2006, Cat. J/ApJ/638/293) source name (3)meta.idcharSCUBAKirk et al. (2006, Cat. J/ApJ/646/1009) catalog name (3)meta.idchartintTotal integration timemintime.epochintrmsNoise level in NH_3_(1,1) spectrum (4)mKinstr.det.noiseintNH3(1,1)Integrated NH_3_(1,1) intensity (4)K.km/sphot.flux.density;em.radiofloate_NH3(1,1)Uncertainty in NH3(1,1)K.km/sstat.errorfloatNH3(2,2)Integrated NH_3_(2,2) intensity (4)K.km/sphot.flux.density;em.radiofloate_NH3(2,2)Uncertainty in NH3(2,2)K.km/sstat.errorfloatC2SIntegrated C_2_S(1,1) intensity (4)K.km/sphot.flux.density;em.radiofloate_C2SUncertainty in C2SK.km/sstat.errorfloatJ/ApJS/175/509/table3Derived Physical PropertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNH3SRCRunning source number (G1)meta.id;meta.mainintm_NH3SRC[.12 ] Mulltiplicity index (G1)meta.code.multipcharf_NH3SRC[b] Multiple components (G1)meta.codecharVLSRSource LSR velocitykm/sphys.veloc;pos.lsrfloate_VLSRUncertainty in VLSRkm/sstat.error;phys.veloc;pos.lsrfloatl_sigmaLimit flag on sigmameta.code.errorcharsigmaNH_3_ line velocity dispersionkm/sphys.veloc.dispersionfloate_sigmaUncertainty in sigmakm/sstat.errorfloatl_TkLimit flag on Tkmeta.code.errorcharTk? Kinetic temperatureKphys.temperaturefloatnullablee_Tk? Uncertainty in TkKstat.errorfloatnullablel_NH3Limit flag on NH3meta.code.errorcharNH3? NH_3_ line column density1e+13cm**-2phys.columnDensity;spect.linefloatnullablee_NH3? Uncertainty in NNH3 (2)1e+13cm**-2stat.errorfloatnullablel_C2SLimit flag on C2Smeta.code.errorcharC2S? C_2_S line column density1e+12cm**-2phys.columnDensity;spect.linefloatnullablee_C2S? Uncertainty in C2S1e+12cm**-2stat.errorfloatnullabletau1? NH_3_(1,1) total line opacityphys.absorption.opticalDepth;spect.linefloatnullablee_tau1? Uncertainty in tau1stat.errorfloatnullableTx? NH_3_ excitation temperatureKphys.atmol.excitationfloatnullablee_Tx? Uncertainty in TxKstat.errorfloatnullablet1(T-Tb)? The {tau}_1_(Tx-T_bg_) value (3)Kphys.absorption.opticalDepthfloatnullablee_t1(T-Tb)? Uncertainty in t1(T-Tb)Kstat.errorfloatnullableetaf? Beam filling fraction when k=Tx (2)instr.paramfloatnullableTC2S? C_2_S line peak temperatureKspect.line.intensity;stat.maxfloatnullablee_TC2S? Uncertainty in TC2SKstat.errorfloatnullablesigC2S? C_2_S line velocity dispersionkm/sphys.veloc.dispersionfloatnullablee_sigC2S? Uncertainty in sigmaC2Skm/sstat.errorfloatnullableVoff? C_2_S line velocity offset with respect to NH_3_ complexkm/sspect.dopplerVeloc;arith.difffloatnullablee_Voff? Uncertainty in Voffkm/sstat.errorfloatnullablechi2Reduced {chi}^2^ fit (4)stat.fit.param;meta.modelledfloat