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J/ApJ/690/L122            SiS line list                          (Cami+, 2009)

The detection of infrared SiS bands in spectra of S stars. Cami J., Sloan G.C., Markwick-Kemper A.J., Zijlstra A.A., Bauschlicher C.W. Jr, Matsuura M., Decin L., Hony S. <Astrophys. J. 690, L122 (2009)> =2009ApJ...690L.122C
ADC_Keywords: Atomic physics Keywords: infrared: stars - molecular data - stars: AGB and post-AGB - stars: atmospheres - Abstract: We present Spitzer spectra of S stars, which are cool evolved stars with a C/O ratio near unity, some of which have enhanced s-process abundances. We present the detection of a strong and unusual band in the mid-infrared, at 13um, within the N-band window. Using quantum-chemically calculated line lists, and model spectra, we identify this band as the fundamental rovibrational band of SiS. Detection of the overtone band at 6.7um confirms the identification Fitting the line profile shows that the molecule is located in relatively cool layers, at T∼1500K. We discuss these results in the context of chemical equilibrium models. The observed strength of these bands in the cool S stars makes them a promising observational diagnostic tool for studying the atmospheres of brown dwarfs and exoplanets. Description: We present an infrared line list for the ro-vibrational transitions of SiS. Included are the fundamental and several overtone bands (up to Δv=4) for vibrational levels up to v=13 and rotational levels up to J=350. This line list contains the transition frequency, the lower state energy, the Einstein A value and the relevant vibrational and rotational quantum numbers. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file sis.dat 57 31590 SiS line list
Byte-by-byte Description of file: sis.dat
Bytes Format Units Label Explanations
2- 12 F11.6 cm-1 sigma Transition frequency 15- 26 F12.6 cm-1 E Lower state energy 28- 41 E14.8 s-1 A Einstein transition probability (A-value) 44- 45 I2 -- vl Lower state vibrational quantum number 48- 49 I2 -- vu Upper state vibrational quantum number 51- 53 I3 -- Jl Lower state angular momentum quantum number 55- 57 I3 -- Ju Upper state angular momentum quantum number
Acknowledgements: Jan Cami, jcami(at)uwo.ca
(End) Jan Cami [UWO], Patricia Vannier [CDS] 13-Jan-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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