Abstract
HI synthesis observations of the dwarf “regular” galaxy UGC 2259 are presented. This system turns out to be most suitable for our purpose of studying the mass distribution in late-type spirals. It has a symmetrical HI distribution extending over 2 D25 and a regular velocity field which shows no sign of departure from axial symmetry. Despite the fact that UGC 2259 is fainter than most other objects of the same morphological type, its HI properties are typical of what is expected from an Scd galaxy with a MH/LB = 0.43.
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