The Baryonic Tully-Fisher Relation in the Local Group and the Equivalent
  Circular Velocity of Pressure Supported Dwarfs
  We explore the Baryonic Tully-Fisher Relation in the Local Group.
Rotationally supported Local Group galaxies adhere precisely to the relation
defined by more distant galaxies. For pressure supported dwarf galaxies, we
determine the scaling factor $\beta_c$ that relates their observed velocity
dispersion to the equivalent circular velocity of rotationally supported
galaxies of the same mass such that $V_o = \beta_c \sigma_*$. For a typical
mass-to-light ratio $\Upsilon_* = 2\;\mathrm{M}_{\odot}/\mathrm{L}_{\odot}$ in
the $V$-band, we find that $\beta_c = 2$. More generally, $\log \beta_c = 0.25
\log \Upsilon_* +0.226$. This provides a common kinematic scale relating
pressure and rotationally supported dwarf galaxies.
