Journal Article

A variationally computed line list for hot NH<sub>3</sub>

S. N. Yurchenko, R. J. Barber and J. Tennyson

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 413, issue 3, pages 1828-1834
Published in print May 2011 | ISSN: 0035-8711
Published online May 2011 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.18261.x
A variationally computed line list for hot NH3

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We present ‘BYTe’, a comprehensive ‘hot’ line list for the ro-vibrational transitions of ammonia, 14NH3, in its ground electronic state. This line list has been computed variationally using the program suite trove, a new spectroscopically determined potential energy surface and an ab initio dipole moment surface. BYTe, is designed to be used at all temperatures up to 1500 K. It comprises 1138 323 351 transitions in the frequency range from 0 to 12 000 cm−1, constructed from 1373 897 energy levels below 18 000 cm−1 having J values ≤36. Comparisons with laboratory data confirm the accuracy of the line list which is suitable for modelling a variety of astrophysical problems including the atmospheres of extrasolar planets and brown dwarfs.

Keywords: molecular data; subdwarfs; infrared: planetary systems

Journal Article.  4265 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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