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astro-ph2008★ 92 cited
Nitrogen superfractionation in dense cloud cores
S. D. Rodgers, S. B. Charnley
We report new calculations of interstellar 15N fractionation. Previously, we have shown that large enhancements of 15N/14N can occur in cold, dense gas where CO is frozen out, but…
astro-ph2007★ 1 cited
Chemical chronology of the Southern Coalsack
S. D. Rodgers, S. B. Charnley, R. G. Smith +1
We demonstrate how the observed H2O ice column densities toward three dense globules in the Southern Coalsack could be used to constrain the ages of these sources. We derive ages o…