3 papers
astro-ph2004
Far-Infrared detection of methylene
E. T. Polehampton, K. M. Menten, S. Bruenken +2
We present a clear detection of CH2 in absorption towards the molecular cloud complexes Sagittarius B2 and W49 N using the ISO Long Wavelength Spectrometer. These observations repr…
astro-ph2002
Detection of HCN Direct l-Type Transitions Probing Hot Molecular Gas in the Proto-Planetary Nebula CRL 618
S. Thorwirth, F. Wyrowski, P. Schilke +4
We report the detection of direct l-type transitions towards the proto-planetary nebula CRL 618 during a study of vibrationally excited carbon chains. The J=8,10,11,12,13,14 DJ=0 t…
astro-ph2002
Physical conditions in the Protoplanetary Nebula CRL 618 derived from observations of vibrationally excited HCCCN
F. Wyrowski, P. Schilke, S. Thorwirth +2
We used the Effelsberg 100m and IRAM 30m telescopes to observe vibrationally excited cyanoacetylene (HCCCN) in several rotational transitions toward the proto-planetary nebula CRL6…