J/A+A/631/A3ivo://CDS.VizieR/J/A+A/631/A3doi:10.26093/cds/vizier.36310003CDSMontillaud J.Juvela M.Vastel C.He J.H.Liu T.Ristorcelli I.,Eden D.J.Kang S.-j.Kim K.-T.Koch P.M.Won Lee C.Rawlings M.G.,Saajasto M.Sanhueza P.Soam A.Zahorecz S.Alina D.Boegner R.,Cornu D.Doi Y.Malinen J.Marshall D.Micelotta E.R.Pelkonen V.M.,Toth L.V.Traficante A.Wang K.2019-11-11T22:00:00Z2019-10-11T07:05:15ZCDS support team

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

cds-question@unistra.frstar-forming-regionsmolecular-cloudsCurrent theories and models attempt to explain star formation globally, from core scales to giant molecular cloud scales. A multi-scale observational characterisation of an entire molecular complex is necessary to constrain them. We investigate star formation in G202.3+2.5, a ~10x3pc sub-region of the Monoceros OB1 cloud with a complex morphology harbouring interconnected filamentary structures. We aim to connect the evolution of cores and filaments in G202.3+2.5 with the global evolution of the cloud and to identify the engines of the cloud dynamics. In this first paper, the star formation activity is evaluated by surveying the distributions of dense cores and protostars, and their evolutionary state, as characterised using both infrared observations from the Herschel and WISE telescopes and molecular line observations with the IRAM 30-m telescope. We find ongoing star formation in the whole cloud, with a local peak in star formation activity around the centre of G202.3+2.5 where a chain of massive cores (10-50M_{sun}_) forms a massive ridge (>150M_{sun}_). All evolutionary stages from starless cores to Class II protostars are found in G202.3+2.5, including a possibly starless, large column density (8x10^22^cm^-2^), and massive (52M_{sun}_) core. All the core-scale observables examined in this paper point to an enhanced star formation activity centred on the junction between the three main branches of the ramified structure of G202.3+2.5. This suggests that the increased star-formation activity results from the convergence of these branches. To further investigate the origin of this enhancement, it is now necessary to extend the analysis to larger scales, in order to examine the relationship between cores, filaments and their environment. We address these points through the analysis of the dynamics of G202.3+2.5 in a joint paper.2019A&A...631A...3Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/631/A3CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/631/A3https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/631/A3http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/631/A3https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/631/A3https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/631/A3http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/631/A3GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/631/A3/list (List of fits datacube)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/631/A3/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/631/A3/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/631/A3/list?GETtext/xml+votable180.050000true100.2519310.723020.0055555555555555566/23810https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/631/A3?format=asciidefaultJ/A+A/631/A3/listList of fits datacuberecnoRecord 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/sphys.velocdoubleBVRADUpper value of VRAD intervalm/sphys.velocfloatdVRADVRAD resolutionm/sphys.velocfloatdnuFrequency resolutionkHzpos.angResolutionfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fits