Isolated dwarf galaxies in the local supercluster and its surroundings
  We present a list of 75 isolated late-type dwarf galaxies which have no
neighbors with a relative radial velocity difference of less than 500 km/s or
projected separations within 500 kpc. These were selected from $\sim$2000 dwarf
galaxies with radial velocities $V_{LG}<3500$ km/s within the volume of the
Local supercluster. In terms of their sizes, luminosities, and the amplitudes
of their internal motions, the isolated late-type dwarfs do not differ
significantly from gas-rich dwarf galaxies in groups and clusters. However, the
median mass of neutral hydrogen per unit luminosity for the isolated dwarf
galaxies is two times more than that for the late-type galaxies in groups. We
have also identified 10 presumably isolated spheroidal dwarf galaxies. The
detection of isolated dwarf galaxies populated exclusively by old stars is of
great interest for modern cosmological scenarios of galaxy formation.
