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Are "realistic" model atmospheres realistic enough?
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2010 (English)In: Chemical Abundances in the Universe: Connecting First Stars to Planets, 2010, Vol. 265, 187-196 p.Conference paper (Refereed)
Abstract [en]

During the latest decades the number of papers on stellar chemical abundances has increased dramatically. This is basically reflecting the very great achievements in telescope- and spectrometer-construction technology. The analysis of the resulting stellar spectra, however, is still not up to the standard that is offered by the observational methods. Recent significant advances in the analysis methods (i.e., in constructing model atmospheres and model spectra to compare with the observed ones) is reviewed with the emphasis on the application to abundance analysis of late-type stars. It is found that the very considerable progress that have been made beyond mixing-length convection and LTE is a major break-through for physically consistent modeling. Still, however, further steps must be takeh, in particular for the cooler stars, before the situation is fully satisifactory.

Place, publisher, year, edition, pages
2010. Vol. 265, 187-196 p.
, Proceedings of the International Astronomical Union, 5
Keyword [en]
stars: atmospheres, stars: abundances, chemical analysis, model atmospheres
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:uu:diva-136521DOI: 10.1017/S1743921310000529ISI: 000280548900045OAI: oai:DiVA.org:uu-136521DiVA: diva2:377027
Symposium S265
Available from: 2010-12-13 Created: 2010-12-13 Last updated: 2012-10-11Bibliographically approved

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