Search for HI in Dwarf Spheroidal Galaxies

Claude Carignan, PASA, 16 (1), 18
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Next Section: Introduction
Contents Page: Volume 16, Number 1

Search for HI in Dwarf Spheroidal Galaxies

Claude Carignan

Département de physique and Observatoire du mont Mégantic, Université de Montréal,
C.P. 6128, Succ. centre ville, Montréal, Québec, Canada, H3C 3J7


After reviewing the HI content and distribution in extreme dwarf irregular (dIrr) and dwarf elliptical (dE) galaxies, previous searches for HI in dwarf spheroidal (dSph) galaxies will be discussed. I will report on the recent detections of HI probably associated with the Local Group (LG) dSph Sculptor and dIrr/dSph Phoenix, obtained with the ATCA, along with a similar detection in the Centaurus Group dSph CEN_41. Data obtained for Sculptor, using the Parkes Multibeam system will also be presented and the advantage of the wide field for such nearby objects will be emphasized. Finally, the possible origin of the gas and the general problem of the missing ISM in dSph galaxies will be discussed.

Keywords: Local Group -- galaxies: ISM -- galaxies: individual (Sculptor) --
galaxies: irregular -- galaxies: structure -- ISM: clouds

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