Kinematical parameterisations of disc galaxies,
employing emission line observations, are indispensable tools for studying the
formation and evolution of galaxies. In Kamphuis et al. (2015) we present an automated procedure which fits
tilted-ring models to HI data cubes of individual, well-resolved galaxies, the
so-called Fully Automated TiRiFiC (FAT) an IDL wrapper around TiRiFiC (Jozsa
2007). FAT accurately models the kinematics and the morphologies of galaxies
with an extent of eight beams across the major axis in the inclination range
20 to 90 degrees without the need for priors such as disc inclination. When
comparing to 2D methods we find that velocity fields cannot be used to
determine inclinations in galaxies that are marginally resolved. We conclude
that with the current code tilted-ring models can be produced in a fully
automated fashion. This will be essential for future HI surveys, with the
Square Kilometre Array (SKA) and its pathfinders. - The picture above (click
to enlarge) shows some of the measured and modelled HI velocity fields of
LVHIS galaxies obtained
with the Australia Telescope Compact Array (ATCA).
