101 citations · 622 across the 19 of their papers we have counts for
9 papers · 1 filter
Hunting for the elusive methylene radical
A. M. Jacob, K. M. Menten, Y. Gong +4
CH2 transitions between 68 and 71 GHz were first detected toward the Orion-KL and W51 Main SFRs. Given their upper level energies of 225 K, they were thought to arise in dense, hot…
NIBLES - an HI census of stellar mass selected SDSS galaxies: I. The Nançay HI survey
W. van Driel, Z. Butcher, S. Schneider +10
To investigate galaxy properties as a function of their total stellar mass, we obtained 21cm HI line observations at the 100-m class Nançay Radio Telescope of 2839 galaxies from th…
Ortho-to-para ratio of NH2. Herschel-HIFI observations of ortho- and para-NH2 rotational transitions towards W31C, W49N, W51 and G34.3+0.1
C. M. Persson, A. O. H. Olofsson, R. Le Gal +10
We have used the Herschel-HIFI instrument to observe both nuclear spin symmetries of amidogen (NH2) towards the high-mass star-forming regions W31C (G10.6-0.4), W49N (G43.2-0.1), W…
Upper limits to interstellar NH+ and para-NH2- abundances. Herschel-HIFI observations towards Sgr B2 (M) and G10.6-0.4 (W31C)
C. M. Persson, M. Hajigholi, G. E. Hassel +12
The understanding of interstellar nitrogen chemistry has improved significantly with recent results from the Herschel Space Observatory. To set even better constraints, we report h…
On the ubiquity of molecular anions in the dense interstellar medium
M. A. Cordiner, J. V. Buckle, E. S. Wirström +2
Results are presented from a survey for molecular anions in seven nearby Galactic star-forming cores and molecular clouds. The hydrocarbon anion C6H- is detected in all seven targe…
Nitrogen hydrides in interstellar gas II. Analysis of Herschel/HIFI observations towards W49N and G10.6-0.4 (W31C)
C. M. Persson, M. De Luca, B. Mookerjea +14
We have used the Herschel-HIFI instrument to observe interstellar nitrogen hydrides along the sight-lines towards W49N and G10.6-0.4 in order to elucidate the production pathways l…