J/A+A/530/A118ivo://CDS.VizieR/J/A+A/530/A118doi:10.26093/cds/vizier.35300118CDSPillai T.Kauffmann J.Wyrowski F.Hatchell J.Gibb A.G.Thompson M.A.2011-07-19T22:09:23Z2011-05-23T08:24:51ZCDS support team

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

cds-question@unistra.frmolecular-cloudsmillimeter-astronomysubmillimeter-astronomyradio-continuum-emissionMost work on high-mass star formation has focused on observations of young massive stars in protoclusters. Very little is known about the preceding stage. Here, we present a new high-resolution study of pre-protocluster regions in tracers exclusively probing the coldest and dense gas (NH_2_ D). The two target regions G29.96-0.02 and G35.20-1.74 (W48) are drawn from the SCAMPS project, which searches for pre-protoclusters near known ultracompact HII regions. We used our data to constrain the chemical, thermal, kinematic, and physical conditions (i.e., densities) in G29.96e and G35.20w. NH_3_, NH_2_ D, HCO^+^, and continuum emission were mapped using the VLA, PdBI, and BIMA.2011A&A...530A.118Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/530/A118CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/530/A118https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/530/A118http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/530/A118https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/530/A118https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/530/A118http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/530/A118GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/530/A118/table1 (List of stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/530/A118/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/530/A118/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/530/A118/table1?GETtext/xml+votable180.050000true281.55325-2.65327780.0055555555555555566/30259 30317https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/530/A118?format=asciiRadiodefaultJ/A+A/530/A118/table1List of starsNameSimbad namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Simbad Hour of Right Ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Degree of Declination (J2000.0)pos.eq.dec;meta.mainVlsrLSR velocitykm/sphys.veloc;pos.lsrfloat1mmName of the fits file with 1mm image in maps subdirectory (0.5arcsec/pix) \linkRole{more details of FITS contents}meta.idchar3mmName of the fits file with 3mm image in maps subdirectory \linkRole{more details of FITS contents} (1arcsec/pix)meta.idchar