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

Dwarf galaxies at the steep and faint end of the Tully Fisher relation