How do atomic code uncertainties affect abundance measurements
in the intracluster medium?

J 2020

How do atomic code uncertainties affect abundance measurements in the intracluster medium?

MERNIER, Francois, Norbert WERNER, Kiran LAKHCHAURA, Jelle DE PLAA, Liyi GU et. al.

Základní údaje

Originální název

How do atomic code uncertainties affect abundance measurements in the intracluster medium?

Autoři

MERNIER, Francois (56 Belgie), Norbert WERNER (703 Slovensko, garant, domácí), Kiran LAKHCHAURA (356 Indie), Jelle DE PLAA (528 Nizozemské království), Liyi GU, Jelle S. KAASTRA (528 Nizozemské království), Junjie MAO (156 Čína), Aurora SIMIONESCU (642 Rumunsko) a Igone URDAMPILLETA (528 Nizozemské království)

Vydání

Astronomische Nachrichten, Weinheim (Germany), Wiley, 2020, 0004-6337

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL URL

Impakt faktor

Impact factor: 0.676

Kód RIV

RIV/00216224:14310/20:00116248

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1002/asna.202023779

UT WoS

000519905200011

Klíčová slova anglicky

atomic data; atomic processes; galaxies; abundances; X-rays; galaxies; clusters

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 23. 11. 2020 09:34, Mgr. Marie Šípková, DiS.

Anotace

V originále

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.

Citovat

MERNIER, Francois, Norbert WERNER, Kiran LAKHCHAURA, Jelle DE PLAA, Liyi GU, Jelle S. KAASTRA, Junjie MAO, Aurora SIMIONESCU a Igone URDAMPILLETA. How do atomic code uncertainties affect abundance measurements in the intracluster medium? Astronomische Nachrichten. Weinheim (Germany): Wiley, 2020, roč. 341, č. 2, s. 203-209. ISSN 0004-6337. Dostupné z: https://dx.doi.org/10.1002/asna.202023779.

@article{1674780,
   author = {Mernier, Francois and Werner, Norbert and Lakhchaura, Kiran and de Plaa, Jelle and Gu, Liyi and Kaastra, Jelle S. and Mao, Junjie and Simionescu, Aurora and Urdampilleta, Igone},
   article_location = {Weinheim (Germany)},
   article_number = {2},
   doi = {http://dx.doi.org/10.1002/asna.202023779},
   keywords = {atomic data; atomic processes; galaxies; abundances; X-rays; galaxies; clusters},
   language = {eng},
   issn = {0004-6337},
   journal = {Astronomische Nachrichten},
   title = {How do atomic code uncertainties affect abundance measurements in the intracluster medium?},
   url = {https://doi.org/10.1002/asna.202023779},
   volume = {341},
   year = {2020}
}

TY  - JOUR
ID  - 1674780
AU  - Mernier, Francois - Werner, Norbert - Lakhchaura, Kiran - de Plaa, Jelle - Gu, Liyi - Kaastra, Jelle S. - Mao, Junjie - Simionescu, Aurora - Urdampilleta, Igone
PY  - 2020
TI  - How do atomic code uncertainties affect abundance measurements in the intracluster medium?
JF  - Astronomische Nachrichten
VL  - 341
IS  - 2
SP  - 203-209
EP  - 203-209
PB  - Wiley
SN  - 00046337
KW  - atomic data
KW  - atomic processes
KW  - galaxies
KW  - abundances
KW  - X-rays
KW  - galaxies
KW  - clusters
UR  - https://doi.org/10.1002/asna.202023779
L2  - https://doi.org/10.1002/asna.202023779
N2  - 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.
ER  -

MERNIER, Francois, Norbert WERNER, Kiran LAKHCHAURA, Jelle DE PLAA, Liyi GU, Jelle S. KAASTRA, Junjie MAO, Aurora SIMIONESCU a Igone URDAMPILLETA. How do atomic code uncertainties affect abundance measurements in the intracluster medium? \textit{Astronomische Nachrichten}. Weinheim (Germany): Wiley, 2020, roč.~341, č.~2, s.~203-209. ISSN~0004-6337. Dostupné z: https://dx.doi.org/10.1002/asna.202023779.

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