A dozen new dwarf galaxy candidates in the Local Volume
  We carried out a survey of low-surface-brightness companions around nine
luminous Local Volume galaxies using long exposures with small amateur
telescopes. We found 12 low- and very low-surface-brightness objects around the
galaxies: NGC 628, NGC 2337, NGC 3368, NGC 3521, NGC 4236, NGC 4258, NGC 4594,
NGC 5055, and NGC 6744 situated within 12 Mpc from us. Assuming the dwarf
candidates are satellites of the neighbouring massive galaxies, their absolute
B magnitudes are in the range of [-8.9, -13.0], linear diameters are [0.6 -
2.7] kpc, and the mean surface brightnesses are [25.1 - 27.5] mag/sq.arecsec.
The mean linear projected separation of satellite candidates from the host
galaxies is 83 kpc.
