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Nitrogen isotope fractionation in protoplanetary disks
Ruud Visser, Simon Bruderer, Paolo Cazzoletti +3
Aims: The two stable isotopes of nitrogen, 14N and 15N, exhibit a range of abundance ratios both inside and outside the solar system. The elemental ratio in the solar neighborhood…
Photodissociation and photoionisation of atoms and molecules of astrophysical interest
A. N. Heays, A. D. Bosman, E. F. van Dishoeck
A new collection of photodissociation and photoionisation cross sections for 102 atoms and molecules of astrochemical interest has been assembled, along with a brief review of the…
Photodissociation and chemistry of N in the circumstellar envelope of carbon-rich AGB stars
Xiaohu Li, T. J. Millar, Catherine Walsh +2
The envelopes of AGB stars are irradiated externally by ultraviolet photons; hence, the chemistry is sensitive to the photodissociation of N and CO, which are major reservoirs…