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11th of October 2015
Neutral hydrogen distribution in M83
by Bärbel Koribalski (CASS)
Inspired by yesterday's ADAP of the Magnetic and gaseous spiral arms in M83 (Frick et al. 2015), here we show its neutral hydrogen distribution. - (Left) Large-scale moment-0 map of the extended HI gas distribution, constructed from mosaic data obtained with both the 21-cm multibeam system on the 64-m Parkes dish and the Australia Telescope Compact Array (ATCA). - (Right) ATCA high-resolution HI moment-0 map (red contours) overlaid onto the WISE 12 micron map (grey-scale, log-stretch) of the central disk (denoted with a grey box in the left panel). The HI contour levels are 0.1, 0.27, 0.43 and 0.6 Jy/beam km/s. The ATCA beam is approx. 10 arcsec. - Reference: Figure 14 in Constructing a WISE High Resolution Galaxy Atlas by Jarrett et al. (2012).

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