Radial variation of the Virgo ICD properties (dots). Top panel: expected dust intensities at 250 μm as obtained from our E(B − V) measurements. The dash-dotted and full purple lines denote the SB profiles of the X-ray gas and optical IC light components, respectively. They have been scaled for a direct comparison with the I250μm profile. Bottom panel: dust-to-gas mass ratios. The different colours identify values derived using different Galactic extinction corrections. Shaded areas trace the uncertainties on the mean values that include the standard deviation and the intrinsic measurement errors.
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