Molecular Hydrogen Fluorescence in the Eridanus Superbubble
Astrophysics
2009-11-11 v1
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.
Cite
@article{arxiv.astro-ph/0601590,
title = {Molecular Hydrogen Fluorescence in the Eridanus Superbubble},
author = {K. Ryu and K. W. Min and J. W. Park and D. H. Lee and W. Han and U. W. Nam and J. H. Park and J. Edelstein and E. J. Korpela and K. Nishikida and E. F. van Dishoeck},
journal= {arXiv preprint arXiv:astro-ph/0601590},
year = {2009}
}
Comments
10 pages, 3 figures, apjl accepted