Modeling the continuum emission from class 0 protostellar sources

Rengel, M. and Froebrich, Dirk and Wolf, S. and Eisloffel, J. (2004) Modeling the continuum emission from class 0 protostellar sources. Baltic Astronomy, 13 (3). pp. 449-453. ISSN 1392-0049. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://www.scopus.com/inward/record.url?eid=2-s2.0...

Abstract

Class 0 sources are objects representing the earliest phase of protostellar evolution. Since these objects are highly obscured by an extended dusty envelope, they can be observed mainly in the far-infrared to mm wavelength range. The analysis of their spectral energy distributions (SEDs) with wide wavelength coverage allows to determine their bolometric temperatures and luminosities. However, a more detailed physical interpretation of the internal physical structure of these objects requires radiative transfer modeling. Here we present the SED modeling results for a sample of nine Class 0 sources located 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 symmetrical model for the youngest Class 0 sources allows to reproduce the observed SEDs reasonably well. Using our models of these sources we derive their masses, density distributions, sizes, etc. The density structure of ρ ∝ r-2 for the collapsing cores at young ages evolves to ρ ∝ r-3/2 at later stages.

Item Type: Article
Uncontrolled keywords: Radiative transfer, Stars: circumstellar matter, Stars: formation
Subjects: Q Science > QB Astronomy
Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Giles Tarver
Date Deposited: 17 Jul 2015 14:37 UTC
Last Modified: 22 Jul 2015 15:27 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49581 (The current URI for this page, for reference purposes)
  • Depositors only (login required):