The Sculptor dwarf irregular galaxy SDIG: present and past

Charlene Anne Heisler,Tanya L Hill,Marshall L Mccall,Richard W Hunstead

Monthly Notices of the Royal Astronomical Society（1997）

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摘要

The stellar content, structure and evolution of the extreme low-luminosity Sculptor dwarf irregular galaxy (SDIG) have been studied using optical (B, R and Hα) and near-infrared (J and K) imaging at the Anglo-Australian Telescope (AAT). Despite the presence of many blue stars, there are at present no detectable H II regions, indicating that the galaxy is now in a relatively quiescent state. Howeve...

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关键词

galaxies: evolution,galaxies: irregular,galaxies: photometry,galaxies:statistics,galaxies: stellar content,infrared: galaxies

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