Ultraviolet Lines and Gas Composition in NGC 1068
Astrophysics
2009-10-30 v1
Abstract
Recent ultraviolet and X-ray observations suggest that the Fe/O ratio in the NLR gas in NGC 1068 is abnormally high. The X-ray analysis, which is presented elsewhere, suggests a large Fe/H and the data shown and discussed here, in particular the extremely weak Oiii] 1664 line, argue for small O/N and O/C. Models to support this claim are shown and discussed. They include improved reddening estimates, dusty and dust-free calculations, and a range of abundances. The anomelous composition makes NGC 1068 unique among Seyfert galaxies and an unusual laboratory for investigating metal enrichment and depletion.
Cite
@article{arxiv.astro-ph/9706140,
title = {Ultraviolet Lines and Gas Composition in NGC 1068},
author = {Hagai Netzer},
journal= {arXiv preprint arXiv:astro-ph/9706140},
year = {2009}
}
Comments
10 pages, latex plus one figure To appear in Astrophysics and Space Science