How do atomic code uncertainties affect abundance measurements in the intracluster medium?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00116248" target="_blank" >RIV/00216224:14310/20:00116248 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/asna.202023779" target="_blank" >https://doi.org/10.1002/asna.202023779</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/asna.202023779" target="_blank" >10.1002/asna.202023779</a>
Alternative languages
Result language
angličtina
Original language name
How do atomic code uncertainties affect abundance measurements in the intracluster medium?
Original language description
Accurate chemical abundance measurements of X-ray-emitting atmospheres pervading massive galaxies, galaxy groups, and clusters provide essential information on the star formation and chemical enrichment histories of these large-scale structures. Although the collisionally ionized nature of the intracluster medium (ICM) makes these abundance measurements relatively easy, the underlying spectral models can rely on different atomic codes, which brings additional uncertainties on the inferred abundances. Here we provide a simple, yet comprehensive comparison between the codes SPEXACT v3.0.5 (cie model) and AtomDB v3.0.9 (vapec model) in the case of moderate, charged-coupled device-like resolution spectroscopy. We show that in cool plasmas (kT less than or similar to 2 keV), systematic differences up to similar to 20% for the Fe abundance and similar to 45% for the O/Fe, Mg/Fe, Si/Fe, and S/Fe ratios may still occur. Importantly, these discrepancies are also found to be instrument-dependent, at least for the absolute Fe abundance. Future improvements in these two codes will be necessary to better address questions on ICM enrichment.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomische Nachrichten
ISSN
0004-6337
e-ISSN
1521-3994
Volume of the periodical
341
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
203-209
UT code for WoS article
000519905200011
EID of the result in the Scopus database
2-s2.0-85082013221