Recent observations of organic molecules in nearby cold, dark interstellar cloudsRecent investigations of the organic chemistry of relatively nearby cold, dark interstellar clouds are reported. Specifically, the presence of interstellar tricarbon monoxide (C3O) in Taurus Molecular Cloud 1 (TMC-1) is confirmed. The first detection in such regions of acetaldehyde (CH3CHO), the most complex oxygen-containing organic molecule yet found in dark clouds is reported, as well as the first astronomical detection of several molecular rotational transitions, including the J = 18-17 and 14-13 transitions of cyanodiacetylene (HC5N), the 1(01)-0(00) transition of acetaldehyde, and the J = 5-4 transition of C3O. A significant upper limit is set on the abundance of cyanocarbene (HCCN) as a result of the first reported interstellar search for this molecule.
Document ID
19860053401
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Suzuki, H. (Nobeyama Solar Radio Observatory Nobeyama, Japan)
Ohishi, M. (Nobeyama Solar Radio Observatory Nobeyama, Japan)
Morimoto, M. (Nobeyama Solar Radio Observatory Nobeyama, Japan)
Kaifu, N. (Nobeyama Radio Observatory Nagano, Japan)
Friberg, P. (Massachusetts, University; Five College Radio Astronomy Observatory, Amherst, United States)