出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The radial density distribution in dark matter halos of galaxies derived from numerical LCDM
simulations is universal and scale invariant. Rotation curves are an important tool to put these
predictions to the test. In order to obtain an extended rotation curve of the spiral galaxy NGC 755
we applied a new method to t tilted rings to a data cube acquired with the VLA. Our ndings
were combined with existing results from optical spectroscopy to provide the highest possible
spatial resolution towards the center. We present the resulting rotation curve and its implications
for the density distribution of this galaxy's dark matter halo, indicating a core-dominated halo
model.
