The molecular cloud associated with NGC 7538

Details The molecular cloud associated with NGC 7538 The molecular cloud associated with NGC 7538

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...250l..43d&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 250, Nov. 1, 1981, p. L43-L47. Research supported by the Aerospace C

Astronomy and Astrophysics

Astrophysics

22

Interstellar Gas, Molecular Clouds, Stellar Evolution, Astronomical Maps, Carbon Monoxide, Cosmic Dust, Emission Spectra, Gas Density, H Ii Regions, Ionized Gases, Mass, Molecular Excitation, Monatomic Gases

Scientific paper

CO maps and preliminary H2S and H2CO data for the molecular cloud associated with NGC 7538 are used to compare the molecular distributions with those of ionized, neutral, and molecular hydrogen and dust. South of the H II regions is a ridge of high (C-13)O column density with cold, self-absorbed H I just beyond it. A dense clump within the ridge is found adjacent to the H II region in the southeast, and a lower density region of expanding gas is seen next to the H II region in the southwest. NGC 7538 is the first region which appears to show observational evidence for a molecular dissociation wave.

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