Table · dataset · 2023
[Mg/Fe] and [Ca/Fe] abundances of XSL
Listed in IVOA Registry (Virtual Observatory)
The X-shooter Spectral Library (XSL) is a large empirical stellar library used as a benchmark for the development of stellar population models.
Description
The inclusion of alpha-elements abundances is crucial to disentangling the chemical evolution of any stellar system. This paper provides a catalogue of high-precision and accurate magnesium and calcium abundances from a wide variety of stars well distributed in the Hertzsprung-Russell (HR) diagram.
We originally performed an analysis of the derived Mg and Ca abundances for medium-resolution spectra from the XSL Data Release 2. For this purpose, we used the GAUGUIN automated abundance estimation code to fit the ultraviolet-blue (UVB) and visible (VIS) spectra. We tested the consistency of the atmospheric parameters and chemical abundances with the Gaia DR3 and the AMBRE Project datasets.We have obtained precise [Mg/Fe] and [Ca/Fe] abundances for 192 and 217 stars respectively, from which 174 stars have measurements in both elements.
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The stars cover a broad range of effective temperature 4000<Teff<6500K, surface gravity 0.3<log(g)<4.8cm/s^2^, and metallicity -2.5<[Fe/H]<+0.4dex. We find an excellent agreement with the abundance estimates from the AMBRE:HARPS and the Gaia/RVS analysis. Moreover, the resulting abundances reproduce a plateau in the metal-poor regime followed by a decreasing trend even at supersolar metallicities, as predicted by Galactic chemical evolution models.
This catalogue is suitable for improving the modelling of evolutionary stellar population models with empirical alpha-enhancements, which could significantly contribute to the analysis of external galaxies abundances in the near future.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/672/A166 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023A&A...672A.166S ui.adsabs.harvard.edu/abs/2023A%26A...672A.166S ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/672/a166 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/672/a166 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:uv | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |