AAS 195th Meeting, January 2000
Session 8. Dwarf, Irregular and Starburst Galaxies
Display, Wednesday, January 12, 2000, 9:20am-6:30pm, Grand Hall

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[8.06] The HST Snapshot Survey of Nearby Dwarf Galaxy Candidates. VI. KK83 and KK256, Two Contrasting Galaxies Beyond the Fringe.

P.W. Hodge (U Wash), A.E. Dolphin (NOAO), D. Geisler (U Concepción), E.K. Grebel (U Wash), P. Guhathakurta (UCSC), I.D. Karachentsev (SAO), V.E. Karachentseva (U Kiev), A. Sarajedini (Wesleyan U), P. Seitzer (U Mich)

The fringe of the Local Group lies somewhere a little beyond 1 Mpc from the center of mass. Galaxies near and beyond the fringe have received relatively little attention compared to the nearer, Local Group members. This poster describes the properties of two very different dwarf galaxies just beyond the fringe, KK83 and KK256 (Karachentseva & Karachentsev 1998, A&AS, 127, 409). KK83 is morphologically very much like Local Group dwarf spheroidals in structure and it has a population that is dominated by very old stars. On the other hand, KK256 is morphologically similar to Local Group dwarf irregular galaxies, such as IC\,1613. It has no bar, but consists of an irregular arrangement of old stars upon which are superimposed eight regions containing younger stars and H\,{\sc ii} regions.

Support for this work was provided by NASA through grant GO-08192.97A from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. EKG acknowledges support by NASA through grant HF-01108.01-98A from the Space Telescope Science Institute. EKG and IDK are supported by the Henri Chrétien International Research Grant administered by the American Astronomical Society. PG is an Alfred P.\ Sloan Research Fellow.

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