We present observations of molecular high-energy radiation probes and report the first detections of CO+ toward W3 IRS5, a source containing ultracompact HII regions. UV radiation and X-rays from the central objects may enhance molecules due to photodissociation and ionization processes. To study the effects on the immediate YSO environment, we are developing time- and depth-dependant chemical models containing UV and X-ray chemistry, by extending the models of Doty et al. (2002). Molecules like CO+ or NO may be used as tracers of very early X-ray emission in regions of high extinction, from which no X-ray photons can be detected.
@article{arxiv.astro-ph/0311022,
title = {High-Energy Radiation Probes of Protostellar Envelopes},
author = {P. Stäuber and A. O. Benz and S. D. Doty and E. F. van Dishoeck and J. K. Jørgensen},
journal= {arXiv preprint arXiv:astro-ph/0311022},
year = {2009}
}
Comments
4 pages, 4 figures. Proceedings of the 2003 Zermatt Conference