This work describes the update of NO along with the incorporation of NO2 and N2O to the HITEMP database. Where appropriate, the HITRAN line lists for the same molecules have also been updated. This work brings the current number of molecules provided by HITEMP to seven. The initial line lists originating from \textit{ab initio} and semi-empirical methods for each molecule have been carefully validated against available observations and, where necessary, adjustments have been made to match observations. We anticipate this work will be applied to a variety of high-temperature environments including astronomical applications, combustion monitoring, and non-local thermodynamic equilibrium conditions.
@article{arxiv.1904.02636,
title = {Spectroscopic line parameters of NO, NO$_2$, and N$_{2}$O for the HITEMP database},
author = {Robert J. Hargreaves and Iouli E. Gordon and Laurence S. Rothman and Sergey A. Tashkun and Valery I. Perevalov and Anastasiya A. Lukashevskaya and Sergey N. Yurchenko and Jonathan Tennyson and Holger S. P. Müller},
journal= {arXiv preprint arXiv:1904.02636},
year = {2019}
}