literature
Literature
Authors
Jobs
Seminars
Conferences
DataBETA

The positive feedback of pop III objects on galaxy formation

Feb, 1998
16 pages
Published in:
  • Astrophys.J.Lett. 499 (1998) L17
e-Print:
DOI:
Report number:
  • OAA-04
View in:
pdf
reference search74 citations

Citations per year

199820042010201620200246810
Abstract: (arXiv)
We study the formation of molecular hydrogen in cooling gas behind shocks produced during the blow-away process thought to occur in the first collapsed, luminous (Pop III) objects in the early universe. We find that for a wide range of physical parameters the H2H_2 fraction is f≈6×10−3f \approx 6 \times 10^{-3}. The H2H_2 mass produced in such explosions can exceed the amount of relic H2H_2 destroyed inside the photodissociation region surrounding a given Pop III. We conclude that these first objects, differently from the suggestion of Haiman et al 1997, might have a net positive feedback on subsequent galactic formation. We discuss the effects of radiation and the implications of our results for the soft-UV background.