J/A+A/606/A123ivo://CDS.VizieR/J/A+A/606/A123doi:10.26093/cds/vizier.36060123CDSHacar A.Tafalla M.Alves J.2017-11-02T11:56:03Z2017-10-24T14:03:11ZCDS support team

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

cds-question@unistra.frinterstellar-mediummolecular-cloudsradio-astronomyopen-star-clustersAre the initial conditions for clustered star formation the same as for non-clustered star formation? To investigate the initial gas properties in young proto-clusters we carried out a comprehensive and high-sensitivity study of the internal structure, density, temperature, and kinematics of the dense gas content of the NGC1333 region in Perseus, one of the nearest and best studied embedded clusters. The analysis of the gas velocities in the Position-Position-Velocity space reveals an intricate underlying gas organization both in space and velocity. We identified a total of 14 velocity-coherent, (tran-)sonic structures within NGC1333, with similar physical and kinematic properties than those quiescent, star-forming (aka fertile) fibers previously identified in low-mass star-forming clouds. These fibers are arranged in a complex spatial network, build-up the observed total column density, and contain the dense cores and protostars in this cloud. Our results demonstrate that the presence of fibers is not restricted to low-mass clouds but can be extended to regions of increasing mass and complexity. We propose that the observational dichotomy between clustered and non-clustered star-forming regions might be naturally explained by the distinct spatial density of fertile fibers in these environments.2017A&A...606A.123Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/606/A123CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/PAZh/27/403 : CCD R photometry in the UMa supercluster (Kopylova+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/606/A123https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/606/A123http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/606/A123https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/606/A123https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/606/A123http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/606/A123GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/606/A123/list (list of datacubes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/606/A123/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/606/A123/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/606/A123/list?GETtext/xml+votable180.050000true52.3245831.347080.0055555555555555566/862https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/606/A123?format=asciiRadiodefaultJ/A+A/606/A123/listlist of datacubesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNzNumber of slicesmeta.numberintbVRADLower value of VRAD intervalm/sspect.resolutiondoubleBVRADUpper value of VRAD intervalm/sspect.resolutionfloatdVRADRadial velocity resolutionm/sspect.resolutionfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitsFileName2Name of the CLASS file, in subdirectory classmeta.id;meta.filechar