6 papers
Submillimeter water and ammonia absorption by the peculiar z~0.89 interstellar medium in the gravitational lens of the PKS 1830-211 system
K. M. Menten, R. Guesten, S. Leurini +5
Using the Atacama Pathfinder Experiment (APEX) telescope we have detected the rotational ground-state transitions of ortho-ammonia and ortho-water toward the redshift ~0.89 absorbi…
High mass star formation in the IRAS 17233-3606 region: a new nearby and bright hot core in the southern sky
S. Leurini, C. Hieret, S. Thorwirth +5
We present molecular line observations of the massive star forming region IRAS 17233-3606 aimed at studying the molecular core associated with the source. The observations were mad…
The empirical equilibrium structure of diacetylene
S. Thorwirth, M. E. Harding, D. Muders +1
High-level quantum-chemical calculations are reported at the MP2 and CCSD(T) levels of theory for the equilibrium structure and the harmonic and anharmonic force fields of diacetyl…
ATCA 3mm observations of NGC6334I and I(N): dense cores, outflows and an UCHII region
H. Beuther, A. J. Walsh, S. Thorwirth +4
Aims: Investigation of the dense gas, the outflows and the continuum emission from the massive twin cores NGC6334I and I(N) at high spatial resolution. Methods: We imaged the regio…
New ammonia masers towards NGC6334I
A. J. Walsh, S. N. Longmore, S. Thorwirth +2
We report the detection of new ammonia masers in the non-metastable (8,6) and (11,9) transitions towards the massive star forming region NGC6334I. Observations were made with the A…
A multi-transition submillimeter water maser study of evolved stars - detection of a new line near 475 GHz
K. M. Menten, A. Lundgren, A. Belloche +2
Context: Maser emission from the H2O molecule probes the warm, inner circumstellar envelopes of oxygen-rich red giant and supergiant stars. Multi-maser transition studies can be us…