PlumX Metrics
Embed PlumX Metrics

Feedback effects on population III Star formation

AIP Conference Proceedings, ISSN: 0094-243X, Vol: 990, Page: 369-373
2008
  • 0
    Citations
  • 0
    Usage
  • 1
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Conference Paper Description

With the help of numerical simulations, we examine two aspects of feedback from the first generation of stars on later star formation. First, we investigate the impact of relic HII regions on forming halos. We find that the positive and negative effects of such feedback nearly cancel because the increase in entropy due to heating is balanced by the increase in the H fraction due to the free electrons. However, these halos can be delayed more easily by a background Lyman-Werner flux. Second, we show that HD cooling is important in halos which have been ionized and allowed to recombine. Gas is allowed to cool to the CMB temperature at densities around n∼10 cm, reducing the accreted mass by a factor of a few. However, as the collapse proceeds, the central gas density exceeds the critical density of HD and heats until HD cooling is no longer important. Therefore the behaviour of the (smaller mass) core is relatively unaffected by HD cooling. © 2008 American Institute of Physics.

Bibliographic Details

Greg L. Bryan; Ian D. McGreer; Zoltán Haiman; Andrei Mesinger

AIP Publishing

Physics and Astronomy

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know