Figure 1 from H I Shells and Supershells in the I-GALFA H I 21 cm Line Survey. I. Fast-expanding H I Shells Associated with Supernova Remnants

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H I Shells and Supershells in the I-GALFA H I 21 cm Line Survey. I. Fast-expanding H I Shells Associated with Supernova Remnants

Authors: G. Park, B.-C. Koo, S. J. Gibson, J.-h. Kang, D. C. Lane, K. A. Douglas, J. E. G. Peek, E. J. Korpela, C. Heiles, and J. H. Newton

Park et al. 2013 The Astrophysical Journal 777 14.

Provider: AAS Journals

Caption: Figure 1.

Average H i 21 cm line profiles of SNRs that have associated high-velocity H i emission. Average profiles toward the SNRs are in black, while background-subtracted profiles are in red. (See Section 2 for details of the background subtraction.) Variations in H i 21 cm brightnesses between the source and background directions cause the wild fluctuations in the background-subtracted profiles at low velocities (| v _LSR| ≲ 100 km s ⁻¹), but these have no effect on our analysis.

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