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| Paper: |
Effects of Photodissociation on the Fragmentation of Accretion Disk around Proto First Stars |
| Volume: |
458, Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way |
| Page: |
81 |
| Authors: |
Susa, H. |
| Abstract: |
Very recently, the final stages of the first star formation have been
investigated intensively. At such stages, an accretion disk is formed
around the very first seed of a proto-star, and they seem to fragment
inevitably. As a result, it might be possible for sub-solar mass first
stars to form from such fragments. However, most of the
previous numerical studies
did not include the effects of photodissociating radiation from the
first proto-stars, which could suppress the fragmentation of the
disk. In this paper we include the transfer of Lyman-Werner photons to
assess the effects of photodissociation on the fragmentation of the
accretion disk. Consequently, we find that the dissociating radiation
tends to suppress the mass accretion, but it cannot quench the
fragmentation process. |
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