Interstellar methyl alcohol

Journal Article · Mon Jan 15 04:00:00 EST 1979 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/156747· OSTI ID:6325851

Gottlieb, C A; Ball, J A; Gottieb, E W; Dickinson, D F

We observed CH/sub 3/OH by its J=2..-->..1 rotational transitions at 96.7 GHz toward 14 galactic sources. We detected /sup 13/CH/sub 3/OH and CH/sub 3/OD toward Sgr B2 and calculated values for the integrated intensity ratios. CH/sub 3/OH emission at 834 MHz in the galactic-center region is extended with respect to the approx.40' telescope beamwidth, although the column density of CH/sub 3/OH molecules peaks near Sgr A and Sgr B2. The Ch/sub 3/OH column densities are less than or approx.6 x 10/sup 14/ cm/sup -2/ except toward Sgr B2 (approx.2 x 10/sup 16/ cm/sup -2/), 3' south of Sgr A (3 x 10/sup 15/ cm/sup -2/), and toward the Kleinmann-Low nebula (approx.2 x 10/sup 15/ cm/sup -2/) in Orion. The /sup 12/CH/sub 3/OH spectra at 96.7 GHz yielded collision rates. We compared the angular extent and column densities of CH/sub 3/OH and H/sub 2/CO and critically examined the recently proposed formation schemes for CH/sub 3/OH.

• Research Organization: Harvard-Smithsonian Center for Astrophysics
• OSTI ID: 6325851
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 227:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ALCOHOLS
CHEMICAL REACTIONS
CHEMISTRY
COSMOCHEMISTRY
DATA
DATA FORMS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
EXPERIMENTAL DATA
GALAXIES
HYDROXY COMPOUNDS
INFORMATION
INTERSTELLAR SPACE
ISOLATED VALUES
METHANOL
MICROWAVE RADIATION
MILKY WAY
NUMERICAL DATA
ORGANIC COMPOUNDS
RADIATIONS
RADIOWAVE RADIATION
ROTATIONAL STATES
SPACE
SPECTRA