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Title: HOT NH{sub 3} SPECTRA FOR ASTROPHYSICAL APPLICATIONS

Abstract

We present line lists for ammonia (NH{sub 3}) at high temperatures obtained by recording Fourier transform infrared emission spectra. Calibrated line lists are presented for 12 temperatures (300 deg. C-1300 deg. C in 100 deg. C intervals and 1370 deg. C) and each line list covers the 740-2100 cm{sup -1} range, which includes the majority of the {nu}{sub 2} umbrella bending mode region (11 {mu}m) and the {nu}{sub 4} asymmetric bending mode region (6.2 {mu}m). We also demonstrate the useful technique of obtaining empirical lower state energies from a set of spectra recorded at different sample temperatures. Using our NH{sub 3} spectra, we have estimated lower state energies (E{sub Low} in cm{sup -1}) and our values have been incorporated into the line lists along with calibrated wavenumbers ({nu}-tilde in cm{sup -1}) and calibrated line intensities (S' in cm molecule{sup -1}) for each line. We expect our hot NH{sub 3} line lists to find direct application in the modeling of planetary atmospheres and brown dwarfs.

Authors:
; ;  [1]
  1. Department of Chemistry, University of York, Heslington, York YO10 5DD (United Kingdom)
Publication Date:
OSTI Identifier:
21578382
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 735; Journal Issue: 2; Other Information: DOI: 10.1088/0004-637X/735/2/111; Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AMMONIA; EMISSION SPECTRA; FOURIER TRANSFORMATION; INFRARED SPECTRA; PLANETARY ATMOSPHERES; SIMULATION; ATMOSPHERES; HYDRIDES; HYDROGEN COMPOUNDS; INTEGRAL TRANSFORMATIONS; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; SPECTRA; TRANSFORMATIONS

Citation Formats

Hargreaves, Robert J., Li, Gang, and Bernath, Peter F., E-mail: rjh135@york.ac.uk, E-mail: gl525@york.ac.uk, E-mail: pfb500@york.ac.uk. HOT NH{sub 3} SPECTRA FOR ASTROPHYSICAL APPLICATIONS. United States: N. p., 2011. Web. doi:10.1088/0004-637X/735/2/111.
Hargreaves, Robert J., Li, Gang, & Bernath, Peter F., E-mail: rjh135@york.ac.uk, E-mail: gl525@york.ac.uk, E-mail: pfb500@york.ac.uk. HOT NH{sub 3} SPECTRA FOR ASTROPHYSICAL APPLICATIONS. United States. doi:10.1088/0004-637X/735/2/111.
Hargreaves, Robert J., Li, Gang, and Bernath, Peter F., E-mail: rjh135@york.ac.uk, E-mail: gl525@york.ac.uk, E-mail: pfb500@york.ac.uk. Sun . "HOT NH{sub 3} SPECTRA FOR ASTROPHYSICAL APPLICATIONS". United States. doi:10.1088/0004-637X/735/2/111.
@article{osti_21578382,
title = {HOT NH{sub 3} SPECTRA FOR ASTROPHYSICAL APPLICATIONS},
author = {Hargreaves, Robert J. and Li, Gang and Bernath, Peter F., E-mail: rjh135@york.ac.uk, E-mail: gl525@york.ac.uk, E-mail: pfb500@york.ac.uk},
abstractNote = {We present line lists for ammonia (NH{sub 3}) at high temperatures obtained by recording Fourier transform infrared emission spectra. Calibrated line lists are presented for 12 temperatures (300 deg. C-1300 deg. C in 100 deg. C intervals and 1370 deg. C) and each line list covers the 740-2100 cm{sup -1} range, which includes the majority of the {nu}{sub 2} umbrella bending mode region (11 {mu}m) and the {nu}{sub 4} asymmetric bending mode region (6.2 {mu}m). We also demonstrate the useful technique of obtaining empirical lower state energies from a set of spectra recorded at different sample temperatures. Using our NH{sub 3} spectra, we have estimated lower state energies (E{sub Low} in cm{sup -1}) and our values have been incorporated into the line lists along with calibrated wavenumbers ({nu}-tilde in cm{sup -1}) and calibrated line intensities (S' in cm molecule{sup -1}) for each line. We expect our hot NH{sub 3} line lists to find direct application in the modeling of planetary atmospheres and brown dwarfs.},
doi = {10.1088/0004-637X/735/2/111},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 735,
place = {United States},
year = {2011},
month = {7}
}