Comparing emission- and absorption-based gas-phase metallicities in GRB host galaxies at z = 2-4 using JWST
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00585244" target="_blank" >RIV/67985815:_____/24:00585244 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0353669" target="_blank" >https://hdl.handle.net/11104/0353669</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stae677" target="_blank" >10.1093/mnras/stae677</a>
Alternative languages
Result language
angličtina
Original language name
Comparing emission- and absorption-based gas-phase metallicities in GRB host galaxies at z = 2-4 using JWST
Original language description
We present results from a JWST/NIRSpec programme to investigate for the first time the relation between the metallicity of neutral gas probed in absorption by GRB afterglows and the metallicity of the star-forming regions for the same host galaxy sample. Using an initial sample of eight GRB host galaxies at z = 2.1-4.7, we find a tight relation between absorption and emission line metallicities when using the recently proposed R(over dot) metallicity diagnostic (+/- 0.2 dex). This agreement implies a relatively chemically homogeneous multiphase interstellar medium and indicates that absorption and emission line probes can be directly compared. However, the relation is less clear when using other diagnostics, such as R-23 and R-3. We also find possible evidence of an elevated N/O ratio in the host galaxy of GRB 090323 at z = 4.7, consistent with what has been seen in other z > 4 galaxies. Ultimate confirmation of an enhanced N/O ratio and of the relation between absorption and emission line metallicities will require a more direct determination of the emission line metallicity via the detection of temperature-sensitive auroral lines in our GRB host galaxy sample.
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
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
529
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
25
Pages from-to
2807-2831
UT code for WoS article
001188770300012
EID of the result in the Scopus database
2-s2.0-85188705507