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3D Hydrodynamical Simulations of Evolved Stars and Observations of Stellar Surfaces
Univ Nice Sophia Antipolis, Observ Cote Azur, Lab Lagrange, F-06189 Nice, France..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Astrophysics.
2015 (English)In: WHY GALAXIES CARE ABOUT AGB STARS III: A CLOSER LOOK IN SPACE AND TIME, ASTRONOMICAL SOC PACIFIC , 2015, Vol. 497, 11-21 p.Conference paper (Refereed)Text
Abstract [en]

Evolved stars are among the largest and brightest stars and they are ideal targets for the new generation of sensitive, high resolution instrumentation that provides spectrophotometric, interferometric, astrometric, and imaging observables. The interpretation of the complex stellar surface images requires numerical simulations of stellar convection that take into account multi-dimensional time-dependent radiation hydrodynamics with realistic input physics. We show how the evolved star simulations are obtained using the radiative hydrodynamics code (COBOLD)-B-5 and how the accurate observables are computed with the post-processing radiative transfer code OPTIM3D. The synergy between observations and theoretical work is supported by a proper and quantitative analysis using these simulations, and by strong constraints from the observational side.

Place, publisher, year, edition, pages
ASTRONOMICAL SOC PACIFIC , 2015. Vol. 497, 11-21 p.
Series
, Astronomical Society of the Pacific Conference Series, ISSN 1050-3390 ; 497
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-301744ISI: 000371098100002ISBN: 978-1-58381-879-4ISBN: 978-1-58381-878-7OAI: oai:DiVA.org:uu-301744DiVA: diva2:955163
Conference
Conference on Why Galaxies Care About AGB Stars III: A Closer Look in Space and Time, JUL 28-AUG 01, 2014, Univ Vienna, Vienna, AUSTRIA
Available from: 2016-08-24 Created: 2016-08-24 Last updated: 2016-08-24Bibliographically approved

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Freytag, Bernd
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Theoretical Astrophysics
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