A STUDY OF 2MASS LOW SURFACE BRIGHTNESS GALAXIES

摘要

A study is being made of a sample of about 4,000 Low Surface Brightness (LSB) galax-ies detected in the 2MASS all-sky near-infrared survey. These objects have similar central K-band surface brightnesses as optically selected LSBs. About 1, 000 of them were observed in HI, and one third of these were detected. BVRI CCD photometry was obtained of 65 objects. These multi-wavelength data provide us with important information on a large, homogenous sample of LSB galaxies (e.g., colors, gas content). They will be used to construct models of the star formation histories and evolution of LSBs, and for a study of their Tully-Fisher (TF) relation, particularly to search for deviations from the 'classical' TF relation.