The Low Surface Brightness Galaxy HIPASS1126-72

The First Co Map of a Low Surface Brightness Galaxy

Using the Owens Valley Radio Observatory Millimeter-Wavelength Array (OVRO) we have obtained the first CO map of a low surface brightness (LSB) galaxy. The studied galaxy, UGC 01922, was chosen for these observations because both of its previous CO detection with the IRAM 30m telescope and its classification as a Malin 1 ‘cousin’ – an LSB galaxy with MHI ≥ 10 10 M⊙. The OVRO map detected approx...

Galaxy Formation and Evolution: Low Surface Brightness Galaxies

We investigate in detail the hypothesis that low surface brightness galaxies (LSB) differ from ordinary galaxies simply because they form in halos with large spin parameters. We compute star formation rates using the Schmidt law, assuming the same gas infall dependence on surface density as used in models of the Milky Way. We build stellar population models, predicting colours, spectra, and che...

The bimodal spiral galaxy surface brightness distribution

We have assessed the significance of Tully & Verheijen’s (1997) bimodal Ursa Major Cluster spiral galaxy near-infrared surface brightness distribution, focussing on whether this bimodality is simply an artifact of small number statistics. A KolmogorovSmirnov style of significance test shows that the total distribution is fairly represented by a single-peaked distribution, but that their isolate...

Low Surface Brightness Galaxies

The Kinematics in the Core of the Low Surface Brightness Galaxy Ddo

We present a high resolution, SparsePak two-dimensional velocity field for the center of the low surface brightness (LSB) galaxy DDO 39. These data are a significant improvement on previous H I or Hα long slit data, yet the inner rotation curve is still uncertain due to significant noncircular and random motions. These intrinsic uncertainties, probably present in other LSB galaxies too, result ...