Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290..293m&link_type=abstract
In ESA, Infrared Spectroscopy in Astronomy p 293-297 (SEE N90-19084 11-89)
Astronomy and Astrophysics
Astronomy
Early Stars, High Resolution, Infrared Spectroscopy, Molecular Spectra, Stellar Spectra, Infrared Astronomy, Interstellar Gas, Spectrum Analysis, Star Distribution, Stellar Envelopes
Scientific paper
The observations of luminous embedded young stellar objects at high resolution (8 km/s) in the 4.7 microns region, are reported. The spectra cover most of the M band, showing the lines of the v = 1-0 band of (C-12)O and often of (C-13)O with blueshifted components. The observations of GL 2591, M8-IR, GL 490, W3 IRS5, sources of strong molecular bipolar outflows, and W33A, are reported. This technique is shown to be a very powerful probe of hot gas flows not detected at millimeter wavelengths. In most of the sources the lines are resolved in several distinct velocity components. In W33A, in which the 2140/cm feature of solid CO is detectable, the ratio of solid to gas phase is measured.
Maillard Jean Pierre
Michell G. F.
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