Galactic mass-to-light ratios with superfluid dark matter

Context. We make rotation curve fits to test the superfluid dark matter model. Aims. In addition verifying that resulting match data reasonably well, we aim evaluate how satisfactory they are with respect two criteria, namely, reasonable stellar mass-to-light ratios and whether end up in regime of where model resembles modified Newtonian dynamics (MOND). Methods. fitted curves 169 galaxies SPARC sample. Results. found obtained generally acceptable terms populations. However, best-fit have an unnatural dependence on size galaxy giant systematically lower than dwarf galaxies. A second finding is often best superfluid’s force cannot resemble MOND without adjusting a boundary condition separately for each galaxy. case, can no longer expect reproduce phenomenologically observed scaling relations appealing. If, other hand, consider only solutions whose approximates then total mass tension gravitational lensing data. Conclusions. conclude even still unsatisfactory reasons. First, show trend size. Second, do not automatically MOND, if so, strong