J/A+A/499/233ivo://CDS.VizieR/J/A+A/499/233doi:10.26093/cds/vizier.34990233CDSFontani F.Zhang Q.Caselli P.Bourke T.L.2017-06-28T06:58:03Z2009-07-15T15:59:37ZCDS support team

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

cds-question@unistra.frinfrared-sourcesradio-astronomyspectroscopyTo better understand the initial conditions of the high-mass star formation process, it is crucial to study at high-angular resolution the morphology, the kinematics, and eventually the interactions of the coldest condensations associated with intermediate-/high-mass star forming regions. The paper studies the cold condensations in the intermediate-/high-mass proto-cluster IRAS 05345+3157, focusing the attention on the interaction with the other objects in the cluster. We have performed millimeter high-angular resolution observations, both in the continuum and several molecular lines, with the PdBI and the SMA. The millimeter maps reveal the presence of 3 cores inside the interferometers primary beam, called C1-a, C1-b and C2. The lines, specifically N2H+ and N2D+, indicate the presence of two potential pre-stellar condensations (called N and S) not associated with the continuum sources. C1-b is very likely associated with a newly formed early-B ZAMS star embedded inside a hot-core, while C1-a is more likely associated with a class 0 intermediate-mass protostar. The nature of C2 is unclear. Both C1-a and C1-b are good candidates as driving sources of a powerful CO outflow, strongly interacting with both N and S, as demonstrated by the velocity gradient across both condensations. Our major conclusion is that the chemical properties of these pre-stellar cores are similar to those observed in low-mass isolated ones, while the kinematics is dominated by the turbulence triggered by the CO outflow, which can influence their evolution.2009A&A...499..233Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/499/233CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/499/233https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/499/233http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/499/233https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/499/233https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/499/233http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/499/233GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfraredRadiodefaultJ/A+A/499/233/listList of the filesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the fit file in subdirectory fitsmeta.id;stat.fit.param;meta.filecharTitleTitle of the filemeta.notechar