Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...223..287h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 223, no. 1-2, Oct. 1989, p. 287-292. Research supported by the Heinrich-Hertz-
Astronomy and Astrophysics
Astronomy
19
Carbon Monoxide, Infrared Sources (Astronomy), Molecular Clouds, Molecular Spectra, Carbon Isotopes, Infrared Astronomy Satellite, Infrared Spectra, Interstellar Gas, Stellar Evolution
Scientific paper
Molecular (C-12)O and (C-13)O and infrared (IRAS) observations of the high-latitude cloud L 1228 are presented. The CO observations show that the cloud contains a large (18 x 9 arcmin) bipolar molecular outflow centered on the infrared source IRAS 20582 + 7724. The apparent size of the outflow is one of the largest among outflows known at present. The spatial distributions of the integrated (C-13)O line emission and IRAS 100-micron brightness are similar to a high degree in L 1228. The (C-12)O line is self-absorbed at all positions of the cloud where the IR and (C-13)O emission are strong. The observed self-absorption can be explained by assuming either subthermally excited foreground gas or by a temperature gradient along the line of sight in the cloud.
Haikala Lauri K.
Laureijs Rene J.
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