Microwave detection of interstellar ketene

Journal Article · Fri Apr 15 04:00:00 EST 1977 · Astrophys. J., Lett.; (United States)

DOI:https://doi.org/10.1086/182413· OSTI ID:7115906

Turner, B E

Interstellar ketene (H/sub 2/C=C=O) has been observed in the source Sgr B2 via its transitions 5/sub 14//sub -/4/sub 13/, 5/sub 15//sub -/4/sub 14/, and 4/sub 13//sub -/3/sub 12/ at frequencies 101981.39, 100094.51, and 81586.19 MHz, respectively. The transitions 5/sub 05//sub -/4/sub 04/, 4/sub 14//sub -/3/sub 13/, and 4/sub 04//sub -/3/sub 03/ have also tentatively been detected. Statistical equilibrium calculations suggest a rather low column density for ketene (approx.10/sup 14/ cm/sup -2/) arising from a high-density region (approximately-greater-than10/sup 6/ cm/sup -3/).

• Research Organization: National Radio Astronomy Observatory, Green Bank, West Virginia
• OSTI ID: 7115906
• Journal Information: Astrophys. J., Lett.; (United States), Journal Name: Astrophys. J., Lett.; (United States) Vol. 213:2; ISSN AJLEA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
CHEMISTRY
COSMOCHEMISTRY
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
INTERSTELLAR SPACE
KETENES
MICROWAVE RADIATION
MOLECULAR STRUCTURE
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RADIATIONS
SPACE