Low-Mass Star Formation, Triggered by Supernova in Primordial Clouds

Details Low-Mass Star Formation, Triggered by Supernova in Primordial Clouds Low-Mass Star Formation, Triggered by Supernova in Primordial Clouds

2004-12-13

arxiv.org/abs/astro-ph/0412282v1

Astrophys.J. 622 (2005) 39-57

Astronomy and Astrophysics

Astrophysics

38pages, 10 figures, The Astrophysical Journal, accepted 8 Dec. 2004

Scientific paper

10.1086/428030

The evolution of a gas shell, swept by the supernova remnant of a massive first generation star, is studied with H_2 and HD chemistry taken into account. When a first-generation star explodes as a supernova, H_2 and HD molecules are formed in the swept gas shell and effectively cool the gas shell to temperatures of 32 K - 154 K. If the supernova remnant can sweep to gather the ambient gas, the gas shell comes to be dominated by its self-gravity, and hence, is expected to fragment. Our result shows that for a reasonable range of temperatures (200 K - 1000 K) of interstellar gas, the formation of second-generation stars can be triggered by a single supernova or hypernova.

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