EPoS Contribution
EPoS Contribution
Massive Dense Cores in Molecular Clouds

Jeremy Tige
LAM, Marseille, FR
We want to tackle current massive star-forming issues such as "How do massive dense cores form" and characterize their evolutionary path from prestellar to protostellar. We will present our results on two giant molecular clouds: NGC-6334 and NGC-6357, obtained using Herschel maps (HOBYS program) and ancillary data. We made catalogs of prestellar and protostellar massive dense cores, used SED fitting to extract physical paramaters (mass, luminosity, size..), characterised the evolutionary status of each MDC with various star-forming tracers and analyzed the results in different evolutionary diagrams.
Caption: Top: Lbol vs. Menv for NGC6334 Massive Dense Cores (circles). The MDCs are coded with different colors depending of their properties. Red- MDCs with 70um flux > 132Jy, Outer Green- counterpart in the four IRAC bands, Blue- Our selected prestellar MDCs. The signs are for associations with radio continuum (triangles), masers (plus signs), and EGOs (crosses). The evolutionary tracks are adapted from Molinari et al. 2008. Bottom: Multi-wavelength view of an MDC, the core 3-321: Maps, SED and fitted parameters. White ellipses represent getsources footprints for Herschel wavelengths.
Collaborators:
N. Schneider, CEA, France
F. Motte, CEA, France
D. Russeil, LAM, France
Suggested Session: Massive Star Formation and Feedback