Baryonic Tully-Fisher Relation for Extremely Low Mass Galaxies

Understand

We study Tully-Fisher relations for a sample that combines extremely faint (M_B > -14.0) galaxies along with bright (i.e.

• L_*) galaxies.
• Accurate (~ 10%) distances, I band photometry, and B-V colors are known for the majority of the galaxies in our sample.
• The faint galaxies are drawn from the Faint Irregular Galaxy GMRT survey (FIGGS), and we have HI rotation velocities derived from aperture synthesis observations for all of them.