In Fig. 2 (click here) we present a cone diagram for the detected galaxies.
Summed over the declination range 65 to 80 degrees
the galaxies are displayed in R.A. versus radial velocity. Only the very center
of this plot (
) represents the M 81 group.
This cone diagram does not
show a complete sample of galaxies, hence this diagram does not necessarily
document the structure of
the nearby universe. It is evident from this figure that all newly
detected
galaxies are far more distant than the M 81 group.
Galactic hydrogen in the foreground roughly covers a velocity range of -150 to 50 km s-1. About one third of the known M 81 group members have radial velocities in this interval. Therefore we probably miss a number of galaxies in this velocity interval due to confusion with the strong foreground emission of Galactic hydrogen.