92 citations · 149 across the 3 of their papers we have counts for
5 papers
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…
Hydrogen Isocyanide in Comet 73P/Schwassmann-Wachmann (Fragment B)
D. C. Lis, D. Bockelee-Morvan, J. Boissier +3
We present a sensitive 3-sigma upper limit of 1.1% for the HNC/HCN abundance ratio in comet 73P/Schwassmann-Wachmann (Fragment B), obtained on May 10-11, 2006 using Caltech Submill…
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…
Organic Molecules in Low-Mass Protostellar Hot Cores: Submillimeter Imaging of IRAS 16293-2422
Y. -J. Kuan, H. -C. Huang, S. B. Charnley +8
Arcsecond-resolution spectral observations toward the protobinary system IRAS 16293-2422 at 344 and 354 GHz were conducted using the Submillimeter Array. Complex organic molecules…
A Search for Interstellar Pyrimidine
Yi-Jehng Kuan, Chi-Hung Yan, Steven B. Charnley +3
We have searched three hot molecular cores for submillimeter emission from the nucleic acid building-block pyrimidine. We obtain upper limits to the total pyrimidine (beam-averaged…