Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 773, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/773/2/L25
Keywords
galaxies: formation; molecular processes; stars: formation
Categories
Funding
- NSF [PHY-1203228]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1203228] Funding Source: National Science Foundation
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Astrophysical models of primordial star formation require rate constants for three-body recombination as input. The current status of these rates for H-2 due to collisions with H is far from satisfactory, with published rate constants showing orders of magnitude disagreement at the temperatures relevant for H-2 formation in primordial gas. This Letter presents an independent calculation of this recombination rate constant as a function of temperature. An analytic expression is provided for the rate constant which should be more reliable than ones currently being used in astrophysical models.
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