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Recent Observations of Organic Molecules in Nearby Cold, Dark Interstellar Clouds

Published online by Cambridge University Press:  04 August 2017

H. Suzuki ,
M. Ohishi ,
M. Morimoto ,
N. Kaifu ,
P. Friberg ,
W. M. Irvine ,
H. E. Matthews  and
S. Saito
H. Suzuki
Affiliation:
Nobeyama Radio Observatory Nobeyama, Minamisaku, Nagano 38413, Japan
M. Ohishi
Affiliation:
Nobeyama Radio Observatory Nobeyama, Minamisaku, Nagano 38413, Japan
M. Morimoto
Affiliation:
Nobeyama Radio Observatory Nobeyama, Minamisaku, Nagano 38413, Japan
N. Kaifu
Affiliation:
Nobeyama Radio Observatory Nobeyama, Minamisaku, Nagano 38413, Japan
P. Friberg
Affiliation:
Department of Physics and Astronomy, and Five College Radio Astronomy Observatory University of Massachusetts, Amherst, MA 01003
W. M. Irvine
Affiliation:
Department of Physics and Astronomy, and Five College Radio Astronomy Observatory University of Massachusetts, Amherst, MA 01003
H. E. Matthews
Affiliation:
Herzberg Institute for Astrophysics, National Research Council of Canada, Ottawa, Ontario, K1A OR6, Canada
S. Saito
Affiliation:
Institute for Molecular Science, Okazaki 444, Japan

Abstract

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We report recent investigations of the organic chemistry of relatively nearby cold, dark interstellar clouds. Specifically, we confirm the presence of interstellar tricarbon monoxide (C3O) in Taurus Molecular Cloud1 (TMC-1); report the first detection in such regions of acetaldehyde (CH3CHO), the most complex oxygen-containing organic molecule yet found in dark clouds; report the first astronomical detection of several molecular rotational transitions, including the J=18−17 and 14−13 transitions of cyanodiacetylene (HC5N), the 101−000 transition of acetaldehyde, and the J=5−4 transition of C3O; and set a significant upper limit on the abundance of cyanocarbene (HCCN) as a result of the first reported interstellar search for this molecule.

Type
Section III. Planetary, Interplanetary and Interstellar Organic Matter
Information
Symposium - International Astronomical Union , Volume 112: The Search for Extraterrestrial Life: Recent Developments , 1985 , pp. 139 - 144
Copyright
Copyright © Reidel 1985 

References

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