ExoMol line lists for NaH and NaD : J/MNRAS/451/634


Authors : Rivlin T. orcid , Lodi L., Yurchenko S.N. (hide) , Lodi L., Yurchenko S.N. et..al

Bibcode : 2015MNRAS.451..634R (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Atomic physics
UAT : Atomic physics

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Inserted into VizieR : 02-Jun-2015
Last modification : 15-Aug-2024

ExoMol molecular line lists. X The spectrum of sodium hydride. (2015)

Keywords : molecular data - opacity - astronomical data bases miscellaneous - planets and satellites: atmospheres - stars: low-mass

Abstract:Accurate and complete rotational-vibrational and rotational-vibrational- electronic line lists are calculated for sodium hydride: both NaH and NaD isotopologue are considered. These line lists cover all ro- vibrational states of the ground (X^1^{Sigma}^+^) and first excited electronic states. The calculations use available spectroscopically- determined potential energy curves and new high-quality, ab initio dipole moment curves. Partition functions for both isotopologues are calculated and the effect of quasibound states is considered. The resulting line lists are suitable for temperatures up to about 7000K and are designed for studies of exoplanet atmospheres, brown dwarfs and cool stars. In particular the ...(more)
Abstract: (hide)
The data for each isotopologue are in two parts. The first, .states contains a list of rovibronic states. Each state is labelled with the total angular momentum, state degeneracy, vibrational quantum number, and an electronic state label (A/X). Each state has a unique number, which is the number of the row in which it appears in the file. This number is the means by which the state is related to the second part of the data system, the transitions files. The transition files contain three columns: the reference number in the energy file of the upper state; that of the lower state; and the Einstein A coefficient of the transition. A sample programme to generate synthetic spectra from the ExoMol format line lists can be obtained at www.exomol.com.
S.N. Yurchenko, s.yurchenko(at)ucl.ac.uk J. Tennyson, j.tennyson(at)ucl.ac.uk

                
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