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Paper: A High-Resolution VLA Mosaic of HI in M 33
Volume: 240, Gas and Galaxy Evolution: A Conference in Honor of the 20th Anniversary of the VLA
Page: 456
Authors: Thilker, D. A.; Braun, R.; Walterbos, R. A. M.
Abstract: We report on sensitive, wide-field VLA observations of HI in M 33. Our new, 6-pointing mosaic clearly highlights the filamentary nature of the neutral atomic interstellar medium (ISM). Indeed, this map represents the highest resolution HI survey for a spiral galaxy other than the Milky Way. Using the CS and B configurations of the VLA, we attained sensitivity to HI structure on scales down to 20 pc. We note detailed correspondence between the neutral ISM and ionized gas traced by wide-field Hα observations. The new M 33 HI datacube will be used for a morphological study of the relation between massive stars and the ISM, with emphasis on the formation and evolution of expanding shells.
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