The Early Universe


The Universe evolved from a fully-ionized plasma to an almost neutral state in which molecules could form and the first stars were created. We are engaged in studies of the atomic and molecular processes that took place and were crucial to the formation of structure.


State resolved data for radiative association of H and H+ and for
photodissociation of H2+,

J. F. Babb, Ap. J. Suppl. 216 (2015) 21.

Comprehensive rate coefficients for electron-collision-induced
transitions in hydrogen,

D. Vrinceanu, R. Onofrio, and H. R. Sadeghpour,
Ap. J. 780 (2014 2.

The Highly Deuterated Chemistry of the Early Universe, C. D. Gay, P. C. Stancil, S. Lepp, and A. Dalgarno, Ap. J. 737 (2011) 44.

Recombination of H-2 by Raman association in the early universe, A. Dalgarno and Mark van der Loo, Ap. J. Lett. 646 (2006) L91-4.


J. Babb, H. Sadeghpour