The Molecular ISM in Low Surface Brightness Disk Galaxies

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dc.creatorMihos, Chris
dc.creatorSpaans, Marco
dc.creatorMcGaugh, Stacy
dc.date1998-11-02
dc.date.accessioned2026-07-07T02:28:53Z
dc.date.available2026-07-07T02:28:53Z
dc.descriptionWe present models for the interstellar medium in disk galaxies. In particular, we investigate whether the ISM in low surface brightness galaxies can support a significant fraction of molecular gas given their low metallicity and surface density. It is found that the abundance and line brightness of CO in LSB galaxies is small and typically below current observational limits. Still, depending on physical details of the ISM, the fraction of gas in the form of molecular hydrogen can be significant in the inner few kpc of a low surface brightness galaxy. This molecular gas would be at temperatures of $\sim$ 30 -- 50 K, rather higher than in high surface brightness galaxies. These results may help explain the star forming properties and inferred evolutionary history of LSB galaxies.
dc.description22 pages to appear in the Astrophysical Journal, also available at http://burro.astr.cwru.edu/preprints/lsbism.html
dc.identifierhttps://arxiv.org/abs/astro-ph/9811033
dc.identifierhttp://arxiv.org/abs/astro-ph/9811033
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13249
dc.subjectAstrophysics
dc.titleThe Molecular ISM in Low Surface Brightness Disk Galaxies
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