Giant Low Surface Brightness Galaxies: Evolution in Isolation

observations of giant low surface brightness galaxies

We have used the Nançay Radio Telescope to obtain new global H i data for 16 giant low surface brightness (LSB) galaxies. Our targets have optical luminosities and disk scale lengths at the high end for spiral galaxies (L B ∼ 10 10 L ⊙ and h r ∼ >6 kpc for H 0 =75 km s −1 Mpc −1), but they have diffuse stellar disks, with mean disk surface brightnesses ∼ >1 magnitude fainter than normal giant s...

Low Surface Brightness Galaxies

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...

Chemical and spectrophotometric evolution of Low Surface Brightness galaxies

Based on the results of recent surveys, we have constructed a relatively homogeneous set of observational data concerning the chemical and photometric properties of Low Surface Brightness galaxies (LSBs). We have compared the properties of this data set with the predictions of models of the chemical and spectrophotometric evolution of LSBs. The basic idea behind the models, i.e. that LSBs are s...

Massive Disks in Low Surface Brightness Galaxies

An update of the set of low surface brightness galaxies is presented which can be used to set constraints on the otherwise ambiguous decompositions of their rotation curves into contributions due to the various components of the galaxies. The selected galaxies show all clear spiral structure and arguments of density wave theory of galactic spiral arms are used to estimate the masses of the gala...