A 3D model for the stellar populations in the nuclei of NGC 1433, NGC 1566, and NGC 1808 NIR photometry, CO absorption lines, and line-of-sight velocity and its dispersion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00574034" target="_blank" >RIV/67985815:_____/23:00574034 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0344395" target="_blank" >https://hdl.handle.net/11104/0344395</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202245627" target="_blank" >10.1051/0004-6361/202245627</a>
Alternative languages
Result language
angličtina
Original language name
A 3D model for the stellar populations in the nuclei of NGC 1433, NGC 1566, and NGC 1808 NIR photometry, CO absorption lines, and line-of-sight velocity and its dispersion
Original language description
We aim to characterize the properties of the stellar populations in the central few hundred parsecs of nearby galactic nuclei, specifically their age, mass, and 3D geometry. We use spatially resolved spectroscopic observations of NGC 1433, NGC 1566, and NGC 1808 obtained with SINFONI to constrain a 3D model composed of a spherically symmetric nuclear star cluster (NSC) and an extended thick stellar disk. We computed UV to mid-infrared single stellar population (UMISSP) spectra to determine the age of the stellar populations and construct synthetic observations for our model. To overcome degeneracies between key parameters, we simultaneously fit the spatially resolved line-of-sight velocity, line-of-sight-velocity-dispersion, low-spectral-resolution NIR continuum, and high-spectral-resolution CO absorption features for each pixel. For the three objects, we derive the age and mass of the young and old stellar populations in the NSC and surrounding disk, as well as their 3D geometry: radius for the NSC, thickness, inclination, and position angle for the disk. These results are consistent with published independent measurements when available. The proposed method allows us to derive a consistent 3D model of the stellar populations in nearby galactic centers solely based on a near-infrared IFU observation.
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
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
674
Issue of the periodical within the volume
June
Country of publishing house
FR - FRANCE
Number of pages
16
Pages from-to
A135
UT code for WoS article
001007989800002
EID of the result in the Scopus database
2-s2.0-85163173712