The ALMA-PILS survey: First detection of nitrous acid (HONO) in the interstellar medium

@article{Coutens2019TheAS,
  title={The ALMA-PILS survey: First detection of nitrous acid (HONO) in the interstellar medium},
  author={A. Coutens and N. Ligterink and J. Loison and V. Wakelam and H. Calcutt and M. Drozdovskaya and J. J{\o}rgensen and H. Muller and E. Dishoeck and S. Wampfler},
  journal={Astronomy and Astrophysics},
  year={2019},
  volume={623}
}
Nitrogen oxides are thought to play a significant role as a nitrogen reservoir and to potentially participate in the formation of more complex species. Until now, only NO, N$_2$O and HNO have been detected in the interstellar medium. We report the first interstellar detection of nitrous acid (HONO). Twelve lines were identified towards component B of the low-mass protostellar binary IRAS~16293--2422 with the Atacama Large Millimeter/submillimeter Array, at the position where NO and N$_2$O have… Expand

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