Asubject mass m is embedded in an infinite homogeneous sea of field stars with number density n(m)dm in the mass range (m, m+dm). the field stars of all masses have a maxwellian df with dispersion a. thus the field stars are not in thermal equilibrium, which would require that a2 is inversely proportional that the subject example, if m > m) let us assume, however, to m star is in thermal equilibrium with the field stars (this could occur, for (a) show that the dispersion of the subject star is dm m2n(m м f dm mn(m) (7.217) (b) show that the df of the subject star is maxwellian