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Detection of the 2165 Inverse Centimeter (4.619 Micron) XCN Band in the Spectrum of L1551 IRS 5We report the detection of a broad absorption band at 2165 cm (4.619 microns) in the spectrum of L1551 IRS 5. New laboratory results over the 2200-2100 /cm wavenumber interval (4.55-4.76 microns), performed with realistic interstellar ice analogs, suggest that this feature is due to a CN-containing compound. We will refer to this compound as XCN. We also confirm the presence of frozen CO (both in nonpolar and polar matrices) through absorption bands at 2140 /cm (4.67 microns) and 2135 /cm (4.68 microns). The relative abundance of solid-state CO to frozen H2O is approx. 0.13 while the abundance of XCN seems comparable to that of frozen CO.
Document ID
19980215573
Acquisition Source
Ames Research Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/172825
Authors
Tegler, Stephen C. (Notre Dame Univ. IN United States)
Weintraub, David A. (Hawaii Univ. Honolulu, HI United States)
Allamandola, Louis J. (NASA Ames Research Center Moffett Field, CA United States)
Sandford, Scott A. (NASA Ames Research Center Moffett Field, CA United States)
Rettig, Terrence W. (Notre Dame Univ. IN United States)
Campins, Humberto (Florida Univ. Gainesville, FL United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Astrophysical Journal
Publisher: American Astronomical Society
Volume: 411
Subject Category
Astronomy
Report/Patent Number
NASA/CR-1993-208190
NAS 1.26:208190
Funding Number(s)
PROJECT: RTOP 199-52-12-04
CONTRACT_GRANT: NAGw-3385
Distribution Limits
Public
Copyright
Public Use Permitted.

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