The dark matter halo shape of edge-on disk galaxies - I. HI observations

Understand

This is the first paper of a series in which we will attempt to put constraints on the flattening of dark halos in disk galaxies.

• We observe for this purpose the HI in edge-on galaxies, where it is in principle possible to measure the force field in the halo vertically and radially from gas layer flaring and rotation curve decomposition respectively.
• In this paper, we define a sample of 8 HI-rich late-type galaxies suitable for this purpose and present the HI observations.