HII regions feeding the interstellar medium in M83

Details HII regions feeding the interstellar medium in M83 HII regions feeding the interstellar medium in M83

2009-09-22

arxiv.org/abs/0909.3967v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

To appear in the ASP Conference Series Proceedings of "Galaxies in Isolation: Exloring Nature vs. Nurture", Granada, 2009

Scientific paper

We analyse the internal dynamics of star-forming HII regions and their efficiency in interacting with the ISM. We use GHaFaS (Fabry-Perot) data of the nearby spiral galaxy M83 to perform multiple-Gaussian fitting to the integrated Halpha emission line for 136 HII regions, advanced instrumental response subtraction and to study the Luminosity-velocity dispersion relation. We find that the best way of dealing with instrumental response effects is convolving its actual shape with the Gaussian before fitting and that in our data almost none of the regions need a secondary Gaussian.

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