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astro-ph2001★ 415 cited
Molecular ions in L1544. II. The ionization degree
P. Caselli, C. M. Walmsley, A. Zucconi +3
The maps presented in Paper I are here used to infer the variation of the column densities of HCO+, DCO+, N2H+, and N2D+ as a function of distance from the dust peak. These results…
astro-ph2001★ 185 cited
Molecular ions in L1544. I. Kinematics
P. Caselli, C. M. Walmsley, A. Zucconi +3
We have mapped the dense dark core L1544 in H13CO+(1-0), DCO+(2-1), DCO+(3-2), N2H+(1-0), NTH+(3-2), N2D+(2-1), N2D+(3-2), C18O(1-0), and C17O(1-0) using the IRAM 30-m telescope. W…