The NII spectrum of the Orion Nebula
Astrophysics
2009-11-13 v1
Abstract
The predicted emission spectrum of NII is compared with observations of permitted lines in the Orion nebula. Conventional nebular models show that the intensities of the more intense lines can be explained by fluorescence of starlight absorption with a N abundance that is consistent with forbidden lines. Lines excited mostly by recombination on the other hand predict high N abundances. The effects of stellar and nebular parameters and of the atomic data on the predicted intensities are examined.
Keywords
Cite
@article{arxiv.astro-ph/0506578,
title = {The NII spectrum of the Orion Nebula},
author = {Vladimir Escalante and Christophe Morisset},
journal= {arXiv preprint arXiv:astro-ph/0506578},
year = {2009}
}
Comments
12 pages, 7 figures, to appear in MNRAS