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Extended neutral hydrogen filamentary network in NGC 2403

Published online by Cambridge University Press:  09 June 2023

Simone Veronese Open the ORCID record for Simone Veronese [Opens in a new window]  and
W. J. G. de Blok
Simone Veronese
Affiliation:
Netherlands Institute for Radio Astronomy (ASTRON) Kapteyn Astronomical Institute, University of Groningen
W. J. G. de Blok
Affiliation:
Netherlands Institute for Radio Astronomy (ASTRON) Kapteyn Astronomical Institute, University of Groningen Department of Astronomy, University of Cape Town
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Abstract

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We present new neutral hydrogen (Hi) observations of the nearby galaxy NGC 2403 to determine the nature of a low-column density cloud that was detected earlier by the Green Bank Telescope.

We find that this cloud is the tip of a complex of filaments of extraplanar gas that is coincident with the main disk. The total Hi mass of the complex is 2 × 107 M⊙ or 0.6% of the total Hi mass of the galaxy. The main structure, previously referred to as the 8-kpc filament, is now seen to be even more extended, along a 20 kpc stream.

Keywords

Galaxies: evolutionGalaxies: interactionsRadio lines: galaxiesTechniques: interferometric
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies , August 2021 , pp. 75 - 77
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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