The laboratory spectrum of acetaedehyde at 1 millimeter (230-325 GHz)

W. L. Barclay; M. A. Anderson; L. M. Ziurys; I. Kleiner; J. T. Hougen

doi:10.1086/191845

The laboratory spectrum of acetaedehyde at 1 millimeter (230-325 GHz)

W. L. Barclay, M. A. Anderson, L. M. Ziurys, I. Kleiner, J. T. Hougen

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The rotational spectrum of acetaldehyde (CH₃CHO) in the frequency range 230-325 GHz has been measured in the laboratory using millimeter/submillimeter direct absorption spectroscopy. Over 250 transition frequencies are presented for this molecule for both A and E symmetry species in its ground (v_t = 0) and first excited (v_t = 1) torsional state, with experimental uncertainties of ±50 kHz. The data were fitted with a model involving an internal rotation potential function, which typically reproduces the measured frequencies to v_obs - v_calc ≲ 50 kHz for both ground and v_t = 1 state. These newly measured rest frequencies should aid in the identification of interstellar CH₃CHO and in spectral line assignments for millimeter-band scans.

Original language	English (US)
Pages (from-to)	221-226
Number of pages	6
Journal	Astrophysical Journal, Supplement Series
Volume	89
Issue number	1
DOIs	https://doi.org/10.1086/191845
State	Published - 1993

Keywords

Line: identification
Radio lines: general
Techniques: spectroscopic

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/191845

Cite this

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title = "The laboratory spectrum of acetaedehyde at 1 millimeter (230-325 GHz)",

abstract = "The rotational spectrum of acetaldehyde (CH3CHO) in the frequency range 230-325 GHz has been measured in the laboratory using millimeter/submillimeter direct absorption spectroscopy. Over 250 transition frequencies are presented for this molecule for both A and E symmetry species in its ground (vt = 0) and first excited (vt = 1) torsional state, with experimental uncertainties of ±50 kHz. The data were fitted with a model involving an internal rotation potential function, which typically reproduces the measured frequencies to vobs - vcalc ≲ 50 kHz for both ground and vt = 1 state. These newly measured rest frequencies should aid in the identification of interstellar CH3CHO and in spectral line assignments for millimeter-band scans.",

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T1 - The laboratory spectrum of acetaedehyde at 1 millimeter (230-325 GHz)

AU - Barclay, W. L.

AU - Anderson, M. A.

AU - Ziurys, L. M.

AU - Kleiner, I.

AU - Hougen, J. T.

PY - 1993

Y1 - 1993

N2 - The rotational spectrum of acetaldehyde (CH3CHO) in the frequency range 230-325 GHz has been measured in the laboratory using millimeter/submillimeter direct absorption spectroscopy. Over 250 transition frequencies are presented for this molecule for both A and E symmetry species in its ground (vt = 0) and first excited (vt = 1) torsional state, with experimental uncertainties of ±50 kHz. The data were fitted with a model involving an internal rotation potential function, which typically reproduces the measured frequencies to vobs - vcalc ≲ 50 kHz for both ground and vt = 1 state. These newly measured rest frequencies should aid in the identification of interstellar CH3CHO and in spectral line assignments for millimeter-band scans.

AB - The rotational spectrum of acetaldehyde (CH3CHO) in the frequency range 230-325 GHz has been measured in the laboratory using millimeter/submillimeter direct absorption spectroscopy. Over 250 transition frequencies are presented for this molecule for both A and E symmetry species in its ground (vt = 0) and first excited (vt = 1) torsional state, with experimental uncertainties of ±50 kHz. The data were fitted with a model involving an internal rotation potential function, which typically reproduces the measured frequencies to vobs - vcalc ≲ 50 kHz for both ground and vt = 1 state. These newly measured rest frequencies should aid in the identification of interstellar CH3CHO and in spectral line assignments for millimeter-band scans.

KW - Line: identification

KW - Radio lines: general

KW - Techniques: spectroscopic

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The laboratory spectrum of acetaedehyde at 1 millimeter (230-325 GHz)

Abstract

Keywords

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