Diffuse Far-ultraviolet Observation of the Lupus Loop Region
Abstract
Diffuse far-ultraviolet (FUV) emissions from the Lupus Loop region (SNR 330.0+15.0) have been observed with Spectroscopy of Plasma Evolution from Astrophysical Radiation (SPEAR), also known as Far-ultraviolet IMaging Spectrograph (FIMS). We have detected several important ionic lines, including Si II*, C IV, and N IV], which characterize the warm, hot ionized gas in this region. The spatial variations in the line intensities of Si II* and C IV have also been studied in comparison with X-ray and dust observations. The result shows that they originate from the interface between the hot gas seen in the X-ray and the cooler H I shell with which dust is associated. The interface is rather diffuse, and the gases with different temperatures seem to co-exist in this region. A shock may exist upfront in the interface, but its velocity should be very small as no shock-related distinguished feature is seen in Ha.
Cite
@article{arxiv.astro-ph/0604454,
title = {Diffuse Far-ultraviolet Observation of the Lupus Loop Region},
author = {Jong-Ho Shinn and Kyoung Wook Min and Chi-Na Lee and Jerry Edelstein and Eric J. Korpela and Barry Y. Welsh and Wonyong Han and Uk-Won Nam and Ho Jin and Dae-Hee Lee},
journal= {arXiv preprint arXiv:astro-ph/0604454},
year = {2010}
}
Comments
Accepted in ApJL, 4 pages, 3 figures