Molecular cooling of a collapsing protocloud

Details Molecular cooling of a collapsing protocloud Molecular cooling of a collapsing protocloud

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997newa....2..299p&link_type=abstract

New Astronomy, vol. 2, no. 4, p. 299-308.

Astronomy and Astrophysics

Astronomy

24

Early Universe, Molecular Processes

Scientific paper

We analyse the physics at the beginning stage of the early cloud formation using an updated primordial lithium chemistry. As in Puy and Signore (1996) we consider a simple model of a collapsing protocloud after the recombination epoch but paying special attention to the evolution of thermal molecular functions. We find a new cooling mechanism for collapsing protoclouds (10^9 M_sun, 10^10 M_sun). The HD molecule is the main cooling agent when the collapsing protostructure has a temperature of about 200 K.

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