Table · dataset · 2025
Lithium abundances in Kepler giants
Listed in IVOA Registry (Virtual Observatory)
In this work, we studied the distribution of lithium abundances in giants as a function of stellar mass.
Description
We used a sample of 1240 giants common among Kepler photometric and LAMOST medium-resolution (R~7500) spectroscopic survey fields. The asteroseismic {Delta}P-{Delta}{nu} diagram is used to define core He-burning red clump giants and red giant branch stars with an inert He core.
Li abundances have been derived using spectral synthesis for all sample stars. Directly measured values of asteroseismic parameters {Delta}P (or {Delta}{Pi}1) and {Delta}{nu} are either taken from the literature or measured in this study. Of the 777 identified red clump giants, we found 668 low-mass (<=2M_{sun}_) primary red clump giants and 109 high-mass (>2M_{sun}_) secondary red clump giants.
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Observed Li abundances in secondary red clump giants agree with the theoretical model predictions. The lack of Li-rich giants among secondary red clump giants and the presence of Li-rich, including super Li-rich, giants among primary red clump stars reinforces the idea that helium flash holds the key for Li enrichment among low-mass giants. The results will further constrain theoretical models searching for a physical mechanism for Li enhancement among low-mass red clump giants.
Results also serve as observational evidence that only giants with mass less than ~2M_{sun}_ develop a degenerate He core and undergo He flash.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/944/L5 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023ApJ...944L...5M ui.adsabs.harvard.edu/abs/2023ApJ...944L...5M ↗
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/apj/944/l5 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 74%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/944/l5 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (74%) |
| 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 | |
| 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 |