Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-11-24
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures, Latex, macro included, oral contribution in JENAM 2003, "The early phases of star formation", in press
Scientific paper
Class 0 sources are objects representing the earliest phase of the protostellar evolution. Since they are highly obscured by an extended dusty envelope, these objects emit mainly in the far-infrared to millimetre wavelength range. The analysis of their spectral energy distributions with wide wavelength coverage allows to determine the bolometric temperature and luminosity. However, a more detailed physical interpretation of the internal physical structure of these objects requires radiative transfer modelling. We present modelling results of spectral energy distributions of a sample of nine Class 0 sources in the Perseus and Orion molecular clouds. The SEDs have been simulated using a radiative transfer code based on the Monte Carlo method. We find that a spherically symmetric model for the youngest Class 0 sources allows to reproduce the observed SEDs reasonably well. From our modelling we derive physical parameters of our sources, such as their mass, density distribution, size, etc. We find a density structure of $\rho \sim r^{-2}$ for the collapsing cores at young ages, evolving to $\rho \sim r^{-3/2}$ at later times.
Eisloeffel Jochen
Froebrich Dirk
Rengel Miriam
Wolf Sebastian
No associations
LandOfFree
Modelling of the continuum emission from Class 0 sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Modelling of the continuum emission from Class 0 sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modelling of the continuum emission from Class 0 sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-19645