J/A+AS/118/191ivo://CDS.VizieR/J/A+AS/118/191CDSJuvela M.2013-03-06T06:34:01Z1999-03-01T17:11:48ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyradial-velocityWe have observed CS and C^34^S emission towards 33 H_2_O maser positions in the southern sky ({delta}<-28deg) using the SEST telescope. Most of the sources were selected also for their association with strong IRAS sources. CS(2-1) was detected in all sources, with the possible exception of two. Most sources were also mapped in the transitions CS(5-4) and C^34^S(2-1) and half of the sample also in CS(2-1). CS and C^34^S transitions J=2-1, J=3-2 J=5-4 were measured towards the centres of the clouds as determined from the mapping. CS and C^34^S transitions J=7-6 were measured in about a half dozen clouds. CO(1-0) was measured in most clouds in order to determine the kinetic temperatures. The CS column densities were calculated using the LTE approximation. All measurements were also analyzed using a spherical LVG model. We present the observational data and the results of this analysis.1996A&AS..118..191Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/118/191CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/288/601 : Dense molecular cores. I. (Zinchenko+ 1994)J/A+AS/111/95 : Dense molecular cores. II. (Zinchenko+, 1995)J/A+AS/124/385 : Dense molecular cores. V. (Zinchenko+ 1997)J/A+AS/133/337 : Dense molecular cores. VII. (Zinchenko+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/118/191https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/118/191http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/118/191https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/118/191https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/118/191http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/118/191GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/118/191/table2 (The source list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/118/191/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/118/191/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/118/191/table2?GETtext/xml+votable180.050000true203.192309-60.4462150.0055555555555555566/28828 28830 41676-41677 41683 41702 41766 41772 41778 41804-41805 42159 42169 42172 42224 42381 42390-42391 42396 42417 42436 42456 42497-42498https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/118/191?format=asciiOpticalRadiodefaultJ/A+AS/118/191/table2The source listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharnamesOther namesmeta.idcharRA1950Right ascension 1950pos.eq.ra;meta.mainDE1950Declination 1950pos.eq.dec;meta.mainRVRadial velocity of the H2O maserkm/sphys.veloc;pos.heliocentricintn_RV[+] A '+' indicates velocity of an OH masermeta.notecharDistG? Galacto-centric distancekpcpos.distancefloatnullableDist1? Kinematic distance from CS datakpcpos.distancefloatnullableu_Dist1[)] Uncertainty flag on Dist1meta.code.errorcharDist2? Kinematic distance from C^34^S datakpcpos.distancefloatnullableu_Dist2[)] Uncertainty flag on Dist2meta.code.errorcharz1? Height above the galactic plane from CS datapcpos.cartesian.z;pos.galacticintnullableu_z1[)] Uncertainty flag on z1meta.code.errorcharz2? Height above the galactic plane from C^34^S datapcpos.cartesian.z;pos.galacticintnullableu_z2[)] Uncertainty flag on z2meta.code.errorcharDistRef? Distance estimates from the literaturekpcpos.distancefloatnullabler_DistRefDistance references (1)meta.ref;pos.framecharRefMaser references (2)meta.refchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexedJ/A+AS/118/191/table3CS and C^34^S lines area and Gaussian line parameters for the central positions of the sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharPosOffsets of the observed position relative to the positions given in table2pos;arith.diffcharJJ values for the upper level of each transitionphys.atmol.qnintIntTmb1? Integrated line temperature (from C^34^S data)K.km/sspect.line.intensity;spect.linefloatnullablee_IntTmb1? rms uncertainty on IntTmb1K.km/sstat.errorfloatnullableTmb1? Line temperature (from C^34^S data)Kspect.line.intensity;spect.linefloatnullablee_Tmb1? rms uncertainty on Tmb1Kstat.errorfloatnullableRV1? Radial velocity (from C^34^S data)km/sspect.dopplerVelocfloatnullablee_RV1? rms uncertainty on RV1km/sstat.errorfloatnullableDV1? Observed line width (from C^34^S data)km/sspect.line.widthfloatnullablee_DV1? rms uncertainty on DV1km/sstat.errorfloatnullablewing1[bra] Note on the spectra (1)meta.notecharIntTmb2? Integrated line temperature (from CS data)K.km/sspect.line.intensity;spect.linefloatnullablee_IntTmb2? rms uncertainty on IntTmb2K.km/sstat.errorfloatnullableTmb2? Line temperature (from CS data)Kspect.line.intensity;spect.linefloatnullablee_Tmb2? rms uncertainty on Tmb2Kstat.errorfloatnullableRV2? Radial velocity (from CS data)km/sspect.dopplerVelocfloatnullablee_RV2? rms uncertainty on RV2km/sstat.errorfloatnullableDV2? Observed line width (from CS data)km/sspect.line.widthfloatnullablee_DV2? rms uncertainty on DV2km/sstat.errorfloatnullablewing2[bra ] Note on the spectra (1)meta.notecharwing3[bra ] Note on the spectra (1)meta.notecharJ/A+AS/118/191/table5Results for the LTE analysis of the CS observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharJJ values for the upper level of each transitionphys.atmol.qnintTex? Excitation temperatureKphys.atmol.excitationfloatnullablee_Tex? rms uncertainty on TexKstat.errorfloatnullabletaup? Optical depth from C^34^S data (classical method) (1)phys.absorption.opticalDepthfloatnullablee_taup? rms uncertainty on taupstat.errorfloatnullabletaua? Optical depth from C^34^S data (second method) (2)phys.absorption.opticalDepthfloatnullablee_taua? rms uncertainty on tauastat.errorfloatnullablelog(N)? Column density calculated from the line integrals (C^34^S data)log(cm**-2)phys.columnDensityfloatnullablee_log(N)? rms uncertainty on log(N)log(cm**-2)stat.errorfloatnullableJ/A+AS/118/191/table6The densities and cloud masses calculated in LTE approximation from the lines C^34^S(2-1) and CS(2-1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharDistDistancekpcpos.distancefloatSizeSizearcsecphys.angSizefloatlog(n)Densitylog(cm**-3)phys.densityfloatMassCloud masssolMassphys.massintMvirVirial mass of the coresolMassphys.massintJ/A+AS/118/191/table7Results from the LVG analysisrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharTkin? Kinetic temperatureKphys.temperatureintnullableu_Tkin[?] Uncertainty flag on Tkinmeta.code.errorcharl_log(n1)Limit flag on log(n1)meta.code.errorcharlog(n1)? Total gas density derived from CS datalog(cm**-3)phys.densityfloatnullablee_log(n1)? rms uncertainty on log(n1)0.1log(cm**-3)stat.errorintnullablelog(N1)? ^32^CS column density (from CS data)log(cm**-2)phys.columnDensityfloatnullablelog(n2)? Total gas density derived from C^34^S datalog(cm**-3)phys.densityfloatnullablee_log(n2)? rms uncertainty on log(n2)0.1log(cm**-3)stat.errorintnullablelog(N2)? ^32^CS column density (from C^34^S data)log(cm**-2)phys.columnDensityfloatnullablee_log(N2)? rms uncertainty on log(N2)0.1log(cm**-2)stat.errorintnullable