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Reframing the Galaxy and Cluster Mass Discrepancy Problem: A Consequence of Virial Equilibrium and Other Energy Considerations
Jeffrey M. La Fortune
Galaxy and galaxy clusters exhibit tight robust physical scaling relations between baryons and system dynamics. One such phenomenon is mass discrepancy with two leading solution sp…
The Global Escape Velocity Profile and Virial Mass Estimate of The Milky Way Galaxy from Gaia Observations
Jeffrey M. La Fortune
Gaia HyperVelocity Star (HVS) kinematic observations favor a local escape velocity of ~700 km/s, nearly forty-percent greater than conventional estimates. Combining HVS and dwarf g…
On a Generalized Mass-Velocity Relation for Disk Galaxies and Galaxy Clusters
Jeffrey M. La Fortune
We consolidate the BFJ and BTF (MVD) relations into a generalized Scaling Mass Velocity Relation applicable to both pressure-supported galaxy clusters and rotation-supported galaxi…
Mining the SPARC Galaxy Database: Finding "Hidden Variables" in the Baryonic Tully-Fisher Relation
Jeffrey M. La Fortune
The Baryonic Tully-Fisher Relation (BTFR) links baryonic mass of rotationally supported galaxies to their flat disk velocities. A popular form of the BTFR linked to MOND is based o…
A Physical Interpretation of Milky Way Galaxy Dynamics from Precision Astrometrics
Jeffrey M. La Fortune
The dynamical and virial mass of the Milky Way galaxy is estimated using latest high precision stellar halo and dwarf galaxy satellite kinematics. The new data suggest the Galaxy i…
A Dimensional Analysis of the Galactic Baryonic Tully-Fisher Relation with Comparison to MOND and Dark Matter Halo Dynamics
Jeffrey M. La Fortune
Most rotationally-supported galaxies strictly follow the Baryonic Tully-Fisher Relation (BFTR) linking circular velocity with baryon content. This firmly established empirical rela…
The Phenomenological Scaling Relations of Disk Galaxies
Jeffrey M. La Fortune
A conservative scaling model based on Newton's law of circular motion and the virial theorem is proposed. Employing dimensionless scaling relations, a physical solution to the Bary…