Back to Volume
Paper: Synthetic Observations of Rotation Curves and the Properties of Disk Galaxies
Volume: 421, Galaxies in Isolation: Exploring Nature Versus Nurture
Page: 256
Authors: Gómez, G. C.; Manríquez, A.; Fuentes-Carrera, I.
Abstract: We performed synthetic observations of a disk galaxy MHD simulation in order to study the effects of non-circular motions on the modeling of the mass distribution of the galaxy due to spiral structure. We found that the tested methods (slit spectroscopy and ring-averaged velocities) yield rotation curves that are systematically above the circular velocity corresponding to the imposed background potential. When mass models are fitted to the measured rotation curves, the resulting total mass is similar to that of the background potential, but the fit yields more centrally concentrated mass distributions.
Back to Volume