Low Surface Brightness Galaxies and the Field Galaxy Luminosity Function

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...

Low Surface Brightness Galaxies

DWARF AND LOW SURFACE BRIGHTNESS GALAXIES Field Populations

The terms `dwarf' and `low surface brightness' are commonly used to mean a variety of di erent things, and are sometimes used interchangeably. It is thus necessary to explicitly quantify the de nitions which are adopted. Here I shall limit the discussion to eld galaxies which are [exponential] disks characterized by a scale size h and central surface brightness 0. The word dwarf implies things ...

Spitzer Observations of Low Luminosity Isolated and Low Surface Brightness Galaxies

We examine the infrared properties of five low surface brightness galaxies (LSBGs) and compare them with related but higher surface brightness galaxies, using Spitzer Space Telescope images and spectra. All the LSBGs are detected in the 3.6 and 4.5μm bands, representing the stellar population. All but one are detected at 5.8 and 8.0μm, revealing emission from hot dust and aromatic molecules, th...

The environment of Low Surface Brightness Galaxies

Using the Early Data Release of the Sloan Digital Sky Survey (SDSS) we investigated the clustering properties of Low Surface Brightness (LSB) galaxies in comparison to normal, High Surface Brightness (HSB) galaxies. We selected LSB galaxies and HSB galaxies with well measured redshifts from the SDSS data base and performed three-dimensional neighbour counting analysis within spheres of radii be...