Deep Hα Images of the Wolf-Rayet Galaxy HE 2-10

Astronomy and Astrophysics – Astronomy

Scientific paper

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Galaxies: Dwarf, Galaxies: Individual: Alphanumeric: He 2-10, Galaxies: Starburst

Scientific paper

We present continuum-free Hα images of the remarkable Wolf-Rayet galaxy He 2-10. There are extensive low surface brightness structures of ionized gas around He 2-10, including several shells, a possible supershell, and a small, isolated Hα clump. The clump is well outside the body of the galaxy and coincides with a CO feature at the end of the galaxy's tidal tail. We believe the clump to be a small star cluster, containing about 100 O stars. This cluster may be the analog on a smaller scale of the dwarf galaxies formed at the end of the tidal tails in the NGC 4038/4039 merger.

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