Imperial College London
Dr Yvonne Unruh

DrYvonneUnruh

Faculty of Natural Sciences, Department of Physics

Reader in Astrophysics
 
 
 
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Contact

 

y.unruh Website

 
 
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Location

 

1114Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Witzke:2021:0004-6361/202140275,
author = {Witzke, V and Shapiro, A and Cernetic, M and Tagirov, R and Kostogryz, NM and Anusha, LS and Unruh, YC and Solanki, SK and Kurucz, RL},
doi = {0004-6361/202140275},
journal = {Astronomy and Astrophysics: a European journal},
pages = {1--22},
title = {MPS-ATLAS: A fast all-in-one code for synthesising stellar spectra},
url = {http://dx.doi.org/10.1051/0004-6361/202140275},
volume = {653},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Context. Stellar spectral synthesis is essential for various applications, ranging from determining stellar parameters to comprehensive stellar variability calculations. New observational resources as well as advanced stellar atmosphere modelling, taking three dimensional effects from radiative magnetohydrodynamics calculations into account, require a more efficient radiative transfer.Aims. For accurate, fast and flexible calculations of opacity distribution functions (ODFs), stellar atmospheres, and stellar spectra, we developed an efficient code building on the well-established ATLAS9 code. The new code also paves the way for easy and fast access to different elemental compositions in stellar calculations.Methods. For the generation of ODF tables, we further developed the well-established DFSYNTHE code by implementing additional functionality and a speed-up by employing a parallel computation scheme. In addition, the line lists used can be changed from Kurucz’s recent lists. In particular, we implemented the VALD3 line list.Results. A new code, the Merged Parallelised Simplified ATLAS, is presented. It combines the efficient generation of ODF, atmosphere modelling, and spectral synthesis in local thermodynamic equilibrium, therefore being an all-in-one code. This all-in-one code provides more numerical functionality and is substantially faster compared to other available codes. The fully portable MPS-ATLAS code is validated against previous ATLAS9 calculations, the PHOENIX code calculations, and high-quality observations.
AU  - Witzke,V
AU  - Shapiro,A
AU  - Cernetic,M
AU  - Tagirov,R
AU  - Kostogryz,NM
AU  - Anusha,LS
AU  - Unruh,YC
AU  - Solanki,SK
AU  - Kurucz,RL
DO  - 0004-6361/202140275
EP  - 22
PY  - 2021///
SN  - 0004-6361
SP  - 1
TI  - MPS-ATLAS: A fast all-in-one code for synthesising stellar spectra
T2  - Astronomy and Astrophysics: a European journal
UR  - http://dx.doi.org/10.1051/0004-6361/202140275
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000694701500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.aanda.org/articles/aa/full_html/2021/09/aa40275-21/aa40275-21.html
UR  - http://hdl.handle.net/10044/1/92252
VL  - 653
ER  -
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