2009/09/22 by Javier Blasco-Herrera, J. Blasco-Herrera, Blasco-Herrera, Javier +17
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Astrophysics and Star Formation Studies #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Spectroscopy and Laser Applications #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.0909.3967
To appear in the ASP Conference Series Proceedings of "Galaxies in Isolation: Exloring Nature vs. Nurture", Granada, 2009
openalex publication_date 2009/09/22 · arxiv created 2009/09/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.