Cyanoacetylene in dense interstellar clouds

Journal Article · Thu Apr 01 04:00:00 EST 1976 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/154252· OSTI ID:7184420

Morris, M; Turner, B E; Palmer, P; Zuckerman, B

Statistical equilibrium calculations were performed and matched to the observations of several sources. These calculations indicate the following: homogeneous cloud models are inadequate for at least one source, Sgr B2, for which a two-component (core-halo) model is presented; the observed lines of HC/sub 3/N are usually, if not always, optically thin; fairly high densities (> or =10/sup 4/ cm/sup -3/) are generally required to account for the observed lines; the J=1..-->..0 transition of HC/sub 3/N in Sgr B2 probably a weak maser. Several sources are discussed individually. (AIP)

• Research Organization: Owens Valley Radio Observatory, California Institute of Technology
• OSTI ID: 7184420
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 205:1; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640103 -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
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640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC DUST
COSMIC RADIO SOURCES
DUSTS
ELECTROMAGNETIC RADIATION
GALAXIES
H2 REGIONS
INTERSTELLAR SPACE
MOLECULES
NEBULAE
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROPIOLONITRILE
RADIATIONS
RADIOWAVE RADIATION
SPACE