Interstellar gas motions around massive star formation regions in the nearby dwarf galaxy DDO43

Enikő Pichler; Bendegúz Koncz; Krisztina É. Gabányi; András Péter Joó; L. Viktor Tóth

doi:10.14311/AP.2025.65.0073

Authors

Enikő Pichler ELTE Eötvös Loránd University, Department of Astronomy, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
Bendegúz Koncz ELTE Eötvös Loránd University, Department of Astronomy, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary; University of Debrecen, Doctoral School of Physics, Bem tér 18/B, 4026 Debrecen, Hungary
Krisztina É. Gabányi ELTE Eötvös Loránd University, Department of Astronomy, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary; ELTE Eötvös Loránd University, HUN-REN – ELTE Extragalactic Astrophysics Research Group, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary; HUN-REN Research Centre for Astronomy and Earth Sciences, Konkoly Observatory, Konkoly Thege Miklós út 15-17, H-1121 Budapest, Hungary
András Péter Joó ELTE Eötvös Loránd University, Department of Astronomy, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
L. Viktor Tóth ELTE Eötvös Loránd University, Department of Astronomy, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary; University of Debrecen, Doctoral School of Physics, Bem tér 18/B, 4026 Debrecen, Hungary

DOI:

https://doi.org/10.14311/AP.2025.65.0073

Keywords:

line: profiles, turbulence, methods: data analysis, surveys, galaxies: ISM, radio lines: ISM, ultraviolet: stars

Abstract

Areas of massive star formation are strongly influenced by stellar winds and supernovae, therefore, enhanced turbulent flows are expected. We analyse high-quality Karl G. Jansky Very Large Array observations of the neutral hydrogen gas content of DDO43, a relatively nearby irregular dwarf galaxy. The line wings of neutral hydrogen spectral lines, which provide insights into local enhanced velocity dispersion, are investigated together with far-ultraviolet data, tracing emissions from massive star-forming regions. We find very weak correlations with both higher and lower velocity areas.

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