Adenine Abundance in a Collapsing Molecular Cloud
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A vital ingredient of DNA molecule named adenine may be produced by successive addition of HCN during molecular cloud collapse and star formation. We compute its abundance in a collapsing cloud as a function of the reaction rate and show that in much of the circumstances the resulting amount may be sufficient to contaminate planets, comets and meteorites. We introduce a $f$-parameter which may be used to study the abundance where radiative association takes place.
Six pages and one figure. Accepted for Publication in Indian Journal of Physics (April 1, 2000 issue)
Six pages and one figure. Accepted for Publication in Indian Journal of Physics (April 1, 2000 issue)