Density structure of the giant HII region NGC 2363 |
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Authors: | Enrique Pérez Rosa González Delgado José M Vílchez |
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Institution: | 1.Instituto de Astrofísica de Andalucía,Granada,Spain;2.Instituto de Astrofísica de Andalucía,Granada,Spain;3.Instituto de Astrofísica de Andalucía,Granada,Spain |
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Abstract: | We perform a detailed measurement of the electron density along two slit position angles in the bright, low metallicity extragalactic HII region NGC 2363. A comparison of the density structures obtained with the two independent diagnostics given by AIV]4711/4740 and SII]6716/6731, show that they present both different absolute values and different radial dependencies, with the AIV] densities reaching up to 1000 cm-3. We explore the implications for the computation of the He abundance. |
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