2 papers
astro-ph2005
Recent Searches for the Radio Lines of NH_3 in Comets
J. Hatchell, M. K. Bird, F. F. S. van der Tak +1
Radio observations in the ammonia inversion lines of four comets, C/2001 A2 (LINEAR), 153P/Ikeya-Zhang, C/2001 Q4 (NEAT) and C/2002 T7 (LINEAR), were performed at the Effelsberg 10…
astro-ph2003
Abundant H2D+ in the pre-stellar core L1544
P. Caselli, F. F. S. van der Tak, C. Ceccarelli +1
We have detected the 372 GHz line of ortho-H2D+ towards the pre-stellar core L1544. The strongest emission (T_mb ~ 1 K) occurs at the peak of the millimeter continuum emission, whi…