Detection of the 2165 inverse centimeter (4.619 micron) XCN band in the spectrum of L1551 IRS 5

Stephen C. Tegler; David A. Weintraub; Louis J. Allamandola; Scott A. Sandford; Terrence W. Rettig; Humberto Campins

doi:10.1086/172825

Detection of the 2165 inverse centimeter (4.619 micron) XCN band in the spectrum of L1551 IRS 5

Stephen C. Tegler, David A. Weintraub, Louis J. Allamandola, Scott A. Sandford, Terrence W. Rettig, Humberto Campins

Astronomy and Planetary Sciences

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Abstract

We report the detection of a broad absorption band at 2165 cm^-1 (4.619 μm) in the spectrum of L1551 IRS 5. New laboratory results over the 2200-2100 cm^-1 wavenumber interval (4.55-4.76 μm), 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^-1 (4.67 μm) and 2135 cm^-1 (4.68 μm). The relative abundance of solid-state CO to frozen H₂O is ∼0.13 while the abundance of XCN seems comparable to that of frozen CO.

Original language	English (US)
Pages (from-to)	260-265
Number of pages	6
Journal	Astrophysical Journal
Volume	411
Issue number	1
DOIs	https://doi.org/10.1086/172825
State	Published - Jul 1 1993

Keywords

ISM: individual (L 1551 1RS 5)
ISM: molecules
Infrared: interstellar: lines
Line: identification

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/172825

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title = "Detection of the 2165 inverse centimeter (4.619 micron) XCN band in the spectrum of L1551 IRS 5",

abstract = "We report the detection of a broad absorption band at 2165 cm-1 (4.619 μm) in the spectrum of L1551 IRS 5. New laboratory results over the 2200-2100 cm-1 wavenumber interval (4.55-4.76 μm), 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-1 (4.67 μm) and 2135 cm-1 (4.68 μm). The relative abundance of solid-state CO to frozen H2O is ∼0.13 while the abundance of XCN seems comparable to that of frozen CO.",

keywords = "ISM: individual (L 1551 1RS 5), ISM: molecules, Infrared: interstellar: lines, Line: identification",

author = "Tegler, {Stephen C.} and Weintraub, {David A.} and Allamandola, {Louis J.} and Sandford, {Scott A.} and Rettig, {Terrence W.} and Humberto Campins",

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doi = "10.1086/172825",

language = "English (US)",

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TY - JOUR

T1 - Detection of the 2165 inverse centimeter (4.619 micron) XCN band in the spectrum of L1551 IRS 5

AU - Tegler, Stephen C.

AU - Weintraub, David A.

AU - Allamandola, Louis J.

AU - Sandford, Scott A.

AU - Rettig, Terrence W.

AU - Campins, Humberto

PY - 1993/7/1

Y1 - 1993/7/1

N2 - We report the detection of a broad absorption band at 2165 cm-1 (4.619 μm) in the spectrum of L1551 IRS 5. New laboratory results over the 2200-2100 cm-1 wavenumber interval (4.55-4.76 μm), 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-1 (4.67 μm) and 2135 cm-1 (4.68 μm). The relative abundance of solid-state CO to frozen H2O is ∼0.13 while the abundance of XCN seems comparable to that of frozen CO.

AB - We report the detection of a broad absorption band at 2165 cm-1 (4.619 μm) in the spectrum of L1551 IRS 5. New laboratory results over the 2200-2100 cm-1 wavenumber interval (4.55-4.76 μm), 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-1 (4.67 μm) and 2135 cm-1 (4.68 μm). The relative abundance of solid-state CO to frozen H2O is ∼0.13 while the abundance of XCN seems comparable to that of frozen CO.

KW - ISM: individual (L 1551 1RS 5)

KW - ISM: molecules

KW - Infrared: interstellar: lines

KW - Line: identification

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JF - Astrophysical Journal

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ER -

Detection of the 2165 inverse centimeter (4.619 micron) XCN band in the spectrum of L1551 IRS 5

Abstract

Keywords

ASJC Scopus subject areas

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