GalIMF-E-MILES library: Impact of an environment-dependent initial mass function on stellar population spectra
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10509926" target="_blank" >RIV/00216208:11320/25:10509926 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/25:00143350
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Z9KyKUB66M" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Z9KyKUB66M</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202555603" target="_blank" >10.1051/0004-6361/202555603</a>
Alternative languages
Result language
angličtina
Original language name
GalIMF-E-MILES library: Impact of an environment-dependent initial mass function on stellar population spectra
Original language description
We present, for the first time, model spectra of single-age, single-metallicity stellar populations computed with the E-MILES evolutionary synthesis code incorporating an environment-dependent, variable galaxy-wide initial mass function (gwIMF). This gwIMF, calculated using the GalIMF code, is rooted in the integrated galactic initial mass function (IGIMF) theory, which predicts IMF variations as a function of the star formation rate and the metallicity. By coupling these two codes, we generated a comprehensive library of single-burst stellar population spectra uniquely sensitive to gwIMF variations. Through detailed comparisons with the canonical Milky-Way IMF, we reveal how both the spectral energy distributions and key stellar absorption features systematically evolve with age under different IMF conditions. Our results uncover clear spectral signatures tied to IMF variability, emphasising the critical role of star formation and chemical enrichment histories in shaping the integrated light observed in galaxies. Based on our work, specific absorption spectral indices emerge as powerful diagnostics, and they open new pathways to empirically test IMF variations and refine models of galaxy formation and evolution. All synthetic spectra generated in this study are publicly available and constitute a valuable resource for future observational and theoretical investigations.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
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
702
Issue of the periodical within the volume
rijen
Country of publishing house
FR - FRANCE
Number of pages
18
Pages from-to
A229
UT code for WoS article
001599834100005
EID of the result in the Scopus database
2-s2.0-105020678526