Detection of H2 emission towards the wolf-rayet nebula NGC 2359 |
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| Authors: | N. St-Louis R. Doyon F. Chagnon D. Nadeau |
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| Affiliation: | (1) Département de Physique, Université de Montréal and Observatoire du Mont Mégantic, Succ. Centre Ville, C.P. 6128, H3C 3J7 Montréal (Qc), Canada |
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| Abstract: | We report the first detection of molecular hydrogen emission in the vicinity of a Wolf-Rayet star and nebula. The spatial distribution of the excited molecular gas is filamentary and is not correlated with the distribution of the ionised gas as traced by optical emission lines. The typical H2 surface brightness in the filaments is 5× 10–5 ergs s–1 cm–2 str–1. We demonstrate that the excitation mechanism can be shocks or fluorescence from the strong ultraviolet flux of the WR star. |
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| Keywords: | WR Nebula Molecular Hydrogen Interstellar medium |
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