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Fig. 21


Upper panel: Hammer-Aitoff projection of the gas density in the Local Group (for gas beyond the virial radius of the Milky Way), as seen in the CLUES simulation from the position of the Sun. M31 appears as a red/yellow spot near (l,b) = (60°,−55°). The gaseous LG filament is indicated with the greenish color, which displays gas at densities in the range log nH = −4 to −3. The filament reaches from the general M31 direction roughly to its antipole on the sky. Two smaller dwarf galaxies are visible as red spots. Lower panel: velocity distribution of the gas in the same projection, given in LSR. The observed dipole pattern separates gas with high positive velocities at l = 120°320° from gas at high negative velocities (l< 120°,l> 320°).

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