Molecular Hydrogen Fluorescence in the Eridanus Superbubble
نویسندگان
چکیده
The first FUV (λλ 1350–1750Å) 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 I1580/I1610, which may imply the existence of high-temperature molecular clouds in the region. The H2 fluorescence intensity showed a proportional correlation with H-α emission, indicating that the fluorescence and the recombination emission have similar physical origins. Subject headings: ISM: molecules — ISM: supernova remnants — ultraviolet: ISM
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