Neutral Gas Accretion onto Nearby Galaxies
  While there is no lack of evidence for the accretion of stellar systems onto
nearby galaxies, direct evidence for the accretion of gas without stars is
scarce. Here we consider an inventory of starless gas "clouds" in and around
galaxies of the Local Group to discern their general properties and see how
they might appear in distant systems. The conclusion is that accreting gas
without stars is detected almost entirely within the circumgalactic medium of
large galaxies and is rare otherwise. If our Local Group is any example, the
best place to detect starless gas clouds is relatively close to galaxies.
