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ESO 546-G34: the most-metal-poor, low surface brightness galaxy?
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Observational Astronomy.
2011 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 415, no 1, L54-L58 p.Article in journal (Refereed) Published
Abstract [en]

We present a re-analysis of spectroscopic data for 23 H(II) regions in 12 blue, metal-poor, low surface brightness galaxies (LSBGs), taking advantage of recent developments in calibrating strong-line methods. In doing so, we have identified a galaxy (ESO 546-G34) which may be the most-metal-poor LSBG found in the local Universe. Furthermore, we find evidence that blue, metal-poor LSBGs, together with blue compact galaxies (BCGs) and many other HII galaxies, fall outside the regular luminosity-metallicity relation. This suggests that there might be an evolutionary connection between LSBGs and BCGs. In such cases, several very metal poor LSBGs should exist in the local Universe.

Place, publisher, year, edition, pages
2011. Vol. 415, no 1, L54-L58 p.
Keyword [en]
ISM: abundances, HII regions, galaxies: dwarf, galaxies: individual: ESO 546-G34
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-158417DOI: 10.1111/j.1745-3933.2011.01077.xISI: 000293755000012OAI: oai:DiVA.org:uu-158417DiVA: diva2:439575
Available from: 2011-09-08 Created: 2011-09-07 Last updated: 2017-12-08Bibliographically approved

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Bergvall, Nils

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