Ratio of solid to gas phase CO in the line of sight to W33A

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185287· OSTI ID:6538948

Mitchell, G F; Allen, M; Maillard, J P

Spectroscopic observations of the IR source W33A, obtained in the M band (4.6 microns) at resolution 0.057/cm using the Fourier-transform spectrometer at the Cassegrain focus of the Canada-France-Hawaii Telescope on July 12-13, 1987, are reported. The spectrum is shown, and equivalent widths and CO column densities are presented in tables. The absorption lines detected indicate the presence of gas at both 23 and 120 K, attributed to the molecular-cloud core and gas near the source, respectively, but very little solid-phase CO. 11 references.

• Research Organization: Saint Mary's Univ., Halifax (Canada); California Institute of Technology, Pasadena (USA); CNRS, Institut d'Astrophysics, Paris (France)
• OSTI ID: 6538948
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 333; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARBON COMPOUNDS
CARBON ISOTOPES
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMISTRY
COSMIC DUST
COSMIC GASES
COSMOCHEMISTRY
DUSTS
ELECTROMAGNETIC RADIATION
FLUIDS
GASES
INFRARED RADIATION
INTERSTELLAR SPACE
ISOTOPES
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SPACE
SPECTRA