Molecular cloud associated with NGC 7538

Journal Article · Sun Nov 01 04:00:00 EST 1981 · Astrophys. J., Lett. Ed.; (United States)

DOI:https://doi.org/10.1086/183671· OSTI ID:5625466

Dickel, H R; Dickel, J R; Wilson, W J

CO maps and preliminary H/sub 2/S and H/sub 2/CO 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 /sup 13/CO colulmn 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.

• Research Organization: Astronomy Department, University of Illinois
• OSTI ID: 5625466
• Journal Information: Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 249:3; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALDEHYDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC DUST
COSMIC RADIO SOURCES
DISTRIBUTION
DUSTS
FORMALDEHYDE
FUNCTIONS
H1 REGIONS
H2 REGIONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SPATIAL DISTRIBUTION
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
SULFIDES
SULFUR COMPOUNDS