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Molecular Hydrogen Fluorescence in the Eridanus Superbubble

K. Ryu·K. W. Min·J. W. Park·D. H. Lee·W. Han·U. W. Nam·J. H. Park·J. Edelstein·E. J. Korpela·K. Nishikida·E. F. van Dishoeck
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Abstract

The first FUV (lambda lambda 1350-1750 A) spectral imaging observations of the Eridanus superbubble, obtained with the SPEAR/FIMS mission, have revealed distinct fluorescent emission from molecular hydrogen. In this study, the observed emission features were compared with those from a photo-dissociation region model with assumed illuminating stellar fields. The result showed rather high line ratios of I_{1580}/I_{1610}, which may imply the existence of high-temperature molecular clouds in the region. The H_2 fluorescence intensity showed a proportional correlation with H-alpha emission, indicating that the fluorescence and the recombination emission have similar physical origins.

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K. Ryu, K. W. Min, J. W. Park, D. H. Lee, W. Han, U. W. Nam, J. H. Park, J. Edelstein, E. J. Korpela, K. Nishikida, E. F. van Dishoeck. 2006-01-26. Molecular Hydrogen Fluorescence in the Eridanus Superbubble. https://doi.org/10.1086/505203

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