Effects of Magnetic Field and Opacity on Self-Similar YSO Flow Models

During star formation, both infall and outflows are present around protostellar cores. Here we show solutions of a self-similar model that study the two flows with only one set of equations. We focus here on the effects of magnetic field and dust on solutions. Unmagnetized solutions have also been f...

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Bibliographic Details
Published in:Astrophysics and space science 2004-01, Vol.292 (1-4), p.525-530
Main Authors: Combet, Céline, Lery, Thibaut
Format: Article
Language:English
Subjects:
Accretion
Astrophysics
Dust
Fluid dynamics
Magnetic fields
Opacity
Star & galaxy formation
Stars & galaxies
Online Access:Get full text
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Summary:During star formation, both infall and outflows are present around protostellar cores. Here we show solutions of a self-similar model that study the two flows with only one set of equations. We focus here on the effects of magnetic field and dust on solutions. Unmagnetized solutions have also been found. This shows that magnetic field is not the main driving mechanism of the circulation process. We have found that a reduction of magnetic field produces denser, slower and narrower outflows. When the opacity is less dominated by dust, density increases in the equatorial region, allowing larger accretion rates to occur. The comprehension of massive star formation could be related to this latter effect.
ISSN:0004-640X
1572-946X
DOI:10.1023/B:ASTR.0000045058.44315.94