Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.241..873m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 241, Dec. 15, 1989, p. 873-882. Research supported by S
Astronomy and Astrophysics
Astronomy
54
Astronomical Spectroscopy, Cosmic Dust, Galactic Nuclei, Infrared Sources (Astronomy), Interstellar Gas, Milky Way Galaxy, Infrared Spectra, Infrared Spectroscopy, Infrared Telescopes, Line Of Sight, Molecular Absorption
Scientific paper
New 3-micron spectroscopy of the Galactic Center IR sources IRS 12 and 19 and new 4.6-4.8 micron spectroscopy of IRS 3, 7, and 12 are presented. IRS 12 has a broad 3 micron absorption feature and a pronounced 3.4 micron absorption. In all respects, it is similar to the spectra of other Galactic Center sources. IRS 19 has an extremely strong 3 micron absorption, similar to the water-ice feature seen towards dark cloud sources but with an enhanced long-wavelength wing. In the 4.6-4.8 micron spectral region, IRS 3, 7, and 12 all show absorption features due to gas-phase CO molecules. In addition, IRS 12 has the 4.67 micron solid CO absorption.
Adamson Andrew J.
Bode Michael F.
Longmore Andrew J.
McFadzean A. D.
Whittet Doug C. B.
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