EXPERIMENTAL TRANSMISSION SPECTRA OF HOT AMMONIA IN THE INFRARED

High resolution absorption spectra of hot ammonia have been recorded in the 2400--5500 cm$^{-1}$ region and the line lists are presented. This extends our previous work on ammonia in the 740--4000 cm$^{-1}$ regionfootnote{R.J. Hargreaves, G. Li and P.F. Bernath. 2011, ApJ, 735, 111}$^{,}$footnote{R.J. Hargreaves, G. Li and P.F. Bernath. 2011, JQSRT, 113, 670} and utilizes our improved cell design that has been successfully applied to methane in a similar spectral region. Transmission spectra were acquired for seven temperatures up to 700$^{circ}$C using a Bruker IFS 125HR Fourier transform spectrometer and empirical lower state energies are obtained from the temperature dependence of intensities. Applications of our spectra and line lists include modeling of brown dwarfs and (exo)planetary atmospheres