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Diffuse Far-ultraviolet Observation of the Lupus Loop Region

Jong-Ho Shinn·Kyoung Wook Min·Chi-Na Lee·Jerry Edelstein·Eric J. Korpela·Barry Y. Welsh·Wonyong Han·Uk-Won Nam·Ho Jin·Dae-Hee Lee
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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.

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Jong-Ho Shinn, Kyoung Wook Min, Chi-Na Lee, Jerry Edelstein, Eric J. Korpela, Barry Y. Welsh, Wonyong Han, Uk-Won Nam, Ho Jin, Dae-Hee Lee. 2006-04-21. Diffuse Far-ultraviolet Observation of the Lupus Loop Region. https://doi.org/10.1086/505263

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