Origin of the fundamental plane of elliptical galaxies in the Coma
  Cluster without fine-tuning
  After thirty years of the discovery of the fundamental plane, explanations to
the tilt of the fundamental plane with respect to the virial plane still suffer
from the need of fine-tuning. In this paper, we try to explore the origin of
this tilt from the perspective of modified Newtonian dynamics (MOND) by
applying the 16 Coma galaxies available in Thomas et al.[1]. Based on the mass
models that can reproduce de Vaucouleurs' law closely, we find that the tilt of
the traditional fundamental plane is naturally explained by the simple form of
the MONDian interpolating function, if we assume a well motivated choice of
anisotropic velocity distribution, and adopt the Kroupa or Salpeter stellar
mass-to-light ratio. Our analysis does not necessarily rule out a varying
stellar mass-to-light ratio.
