262 citations · 2k across the 51 of their papers we have counts for
12 papers · 1 filter
Vibrationally excited water emission at 658 GHz from evolved stars
A. Baudry, E. M. L. Humphreys, F. Herpin +6
Several rotational transitions of water have been identified toward evolved stars in the ground vibrational state as well as in the first excited state of the bending mode. In the…
Simultaneous 183 GHz H2O Maser and SiO Observations Towards Evolved Stars Using APEX SEPIA Band 5
E. M. L. Humphreys, K. Immer, M. D. Gray +10
We investigate the use of 183 GHz H2O masers for characterization of the physical conditions and mass loss process in the circumstellar envelopes of evolved stars. We used APEX SEP…
On the accretion process in a high-mass star forming region - A multitransitional THz Herschel-HIFI study of ammonia toward G34.26+0.15
M. Hajigholi, C. M. Persson, E. S. Wirström +8
[Abridged] Our aim is to explore the gas dynamics and the accretion process in the early phase of high-mass star formation. The inward motion of molecular gas in the massive star f…
Herschel-HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region
U. A. Yıldız, E. F. van Dishoeck, L. E. Kristensen +60
Herschel-HIFI observations of high-J lines (up to J_u=10) of 12CO, 13CO and C18O are presented toward three deeply embedded low-mass protostars, NGC 1333 IRAS 2A, IRAS 4A, and IRAS…
Ortho-to-para ratio of interstellar heavy water
C. Vastel, C. Ceccarelli, E. Caux +65
Despite the low elemental deuterium abundance in the Galaxy, enhanced molecular D/H ratios have been found in the environments of low-mass star forming regions, and in particular t…
Herschel-HIFI detections of hydrides towards AFGL 2591 (Envelope emission versus tenuous cloud absorption)
S. Bruderer, A. O. Benz, E. F. van Dishoeck +65
The Heterodyne Instrument for the Far Infrared (HIFI) onboard the Herschel Space Observatory allows the first observations of light diatomic molecules at high spectral resolution a…