Fig. 1
Sky distribution (RA and Dec not in scale) of the Local supercluster galaxies with superposed the X-ray contours (Böhringer et al. 1994) highlighting the position of the Virgo cluster. Red points refer to the 372 late-type galaxies observed by Hα3 in the ALFALFA footprint. The 13 optically selected VCC galaxies followed-up in Hα are shown as blue points.
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