The 4-8 micron spectrum of the infrared source W33 A
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Abstract
view Abstract Citations (126) References (22) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The 4 - 8 micron spectrum of the infrared source W33 A. Soifer, B. T. ; Puetter, R. C. ; Russell, R. W. ; Willner, S. P. ; Harvey, P. M. ; Gillett, F. C. Abstract The spectrum of the highly obscured infrared source W33 A from 4.5 to 8 microns is measured in order to investigate the intervening cold, dense interstellar material. Spectrophotometry at a relative spectral resolution of about 0.015 by an airborne filter-wheel infrared spectrometer reveals strong absorption features at 4.61, 5.99 and 6.78 microns. The absorption at 4.61 microns is attributed primarily to the fundamental vibration-rotation band of CO at a column density (at least 10 to the 19th/sq cm) which is 10% of the carbon inferred from silicate abundances. The strengths and line widths of the absorption agt 5.99 and 6.78 microns are interpreted as evidence of absorption in the resonance bands of carbonyl, carbon-carbon double, methyl and methylene bonds of hydrocarbons associated with interstellar dust. Publication: The Astrophysical Journal Pub Date: August 1979 DOI: 10.1086/183035 Bibcode: 1979ApJ...232L..53S Keywords: Absorption Spectra; Carbon Monoxide; Infrared Astronomy; Infrared Spectrophotometers; Interstellar Matter; Radiation Sources; Graphs (Charts); Silicates; Tables (Data); Astrophysics; Carbon Monoxide:Infrared Sources; Infrared Sources:Infrared Spectra; Infrared Sources:Interstellar Matter full text sources ADS |