J/A+A/563/A97ivo://CDS.VizieR/J/A+A/563/A97doi:10.26093/cds/vizier.35630097CDSGerner T.Beuther H.Semenov D.Linz H.Vasyunina T.Bihr S.,Shirley Y.L.Henning T.2015-10-06T13:20:58Z2014-03-17T08:22:01ZCDS support team

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

cds-question@unistra.frmolecular-cloudsspectroscopyUnderstanding the chemical evolution of young (high-mass) star-forming regions is a central topic in star formation research. Chemistry is employed as a unique tool 1) to investigate the underlying physical processes and 2) to characterize the evolution of the chemical composition. With these aims in mind, we observed a sample of 59 high-mass star-forming regions at different evolutionary stages varying from the early starless phase of infrared dark clouds to high-mass protostellar objects to hot molecular cores and, finally, ultra-compact HII regions at 1mm and 3mm with the IRAM 30m telescope. We determined their large-scale chemical abundances and found that the chemical composition evolves along with the evolutionary stages.2014A&A...563A..97Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/563/A97CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/563/A97https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/563/A97http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/563/A97https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/563/A97https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/563/A97http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/563/A97GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/563/A97/list (List of spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/563/A97/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/563/A97/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/563/A97/list?GETtext/xml+votable180.050000true272.61833-19.376110.005555555555555556Cone search capability for table J/A+A/563/A97/table1 (Source list showing the position, the distance, and the evolutionary stage of all high-mass star-forming regions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/563/A97/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/563/A97/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/563/A97/table1?GETtext/xml+votable180.050000true272.618333-19.3761110.0055555555555555566/3649 13049 14287 14307 14309 14317 14333 14353 14622 14655 14670 14689 14692 14697 15629 21439 28912 29091 29096-29097 29101 29103 29114 29461 29505 29509 29511 29513 29532 29535 30218 30245 30256 30258-30259 30262 30269 30313 30318 30328 30420 30425 30644 30691-30692 30714https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/563/A97?format=asciiOpticaldefaultJ/A+A/563/A97/listList of spectraspShow the spectrummeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the source \linkRole{source properties }meta.id;meta.maincharRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainN[1860/20737] Number of points in spectrummeta.numberintFreq0[92/243] Rest (median) frequencyGHzem.freqfloatVlsr[-58/122] LSR velocity of zero pointkm/sphys.veloc;arith.zp;pos.lsrfloatdV[-2.5/-0.24] Velocity widthkm/sspect.resolutionfloatdnu0Lower frequency {nu}_min_-{nu}_0_GHzphys.velocfloatdnu1Upper frequency {nu}_max_-{nu}_0_GHzphys.velocfloatdnu[0.19/2] Frequency resolutionMHzspect.resolutionfloatSize[11/48] FITS file sizeKibytephys.size;meta.fitsintFileNameName of FITS file in "fits" subdirectorymeta.id;meta.fitscharTitleTitle of the filemeta.notecharJ/A+A/563/A97/table1Source list showing the position, the distance, and the evolutionary stage of all high-mass star-forming regionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name \linkRole{spectra available for this source }meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDistDistance (preferred value)kpcpos.distance;pos.heliocentricfloatn_Dist[cd] Note on Dist (1)meta.notecharDist2? Distance (alternative value)kpcpos.distance;pos.heliocentricfloatnullablen_Dist2[egh] Note on Dist2 (1)meta.notecharTypeStage of source (3)src.classcharf24[yn-] flag for embedded 24um point sources (2)meta.notecharf70[yn-] flag for embedded 70um point sources (2)meta.notecharn_f70[bf] Weak or no source (1)meta.notecharRefSources of the dust continuum data: ATLASGAL, SCUBA or Mambometa.id;instrcharsp86-90Spectrum in 86.6-90.5GHz bandmeta.ref.urlcharsp90-94Spectrum in 90.2-94.2GHz bandmeta.ref.urlcharsp217-221Spectrum in 217.3-221.2GHz bandmeta.ref.urlcharsp241-245Spectrum in 241.3-245.2GHz bandmeta.ref.urlchar