  Nearby isolated galaxies ($z\sim 0$), are considered immerse within a thermal
bath at 2.73 K. However the dwarf galaxies orbiting these galaxies are also
subject to additional radiation from their hosts, so they are within a thermal
bath slightly warmer. We claim that this thermal effect can explain several
properties of the dwarf galaxies, such as their rotation curves, their radial
acceleration relations (RAR) and why the velocity-mass dependence at the faint
end of the Tully Fisher Relation (TFR) is steeper for these galaxies. In the
Debye Gravitational Theory (DGT), the galaxies properties, such as the rotation
curves, the RARs, and the TFRs are isothermal curves; they depend explicitly
only of temperature, of the thermal bath in which are immersed. We show that
the steep and faint end of the TFR is composed of a mixture of dwarf galaxies
immersed in thermal baths with temperatures from 2.73 K to 3.80 K. A comparison
among DGT's predictions for the dwarf galaxies relations with data obtained
from the literature show a satisfactory agreement between them.
