Radiative cooling functions for primordial molecules

Details Radiative cooling functions for primordial molecules Radiative cooling functions for primordial molecules

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..280p.132c&link_type=abstract

The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Tole

Astronomy and Astrophysics

Astronomy

Scientific paper

Cooling of primordial gas plays a crucial role in the description of the birth of the first structures in our Universe. Due to the low fractional abundance of molecular species at high redshifts, spontaneous emission rather than collisions represents the most efficient way to cool the pristine plasma. In the present work, radiative (or high density) cooling functions are evaluated for the diatomic species HD, HD+, HeH+, LiH and LiH+. Functions for the triatomic ions H+ 3 and H2D+ are also considered. Analytic fits as a function temperature are provided.

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