Table · dataset · 2024
Stellar chromospheric activity of LAMOST sources
Listed in IVOA Registry (Virtual Observatory)
The dependence of stellar magnetic activity on stellar parameters is inspired by the chromospheric activity studies based on the large-scale spectroscopic surveys.
Description
The main objective of this project is to provide the chromospheric activity parameter database for the LAMOST Low-Resolution Spectroscopic Survey (LRS) spectra of solar-like stars and explore the overall property of stellar chromospheric activity. The CaII H and K lines were employed to construct indicators for assessing and studying the chromospheric activity of solar-like stars.
We investigated the widely used bolometric- and photospheric-calibrated chromospheric activity index R'_HK_, derived from the method in the classic literature (R'_HK,classic_) and the method based on the PHOENIX model (R'_HK,PHOENIX_). Since the detailed stellar atmospheric parameters, effective temperature (T_eff_), surface gravity (logg), and metallicity ([Fe/H]) are available for LAMOST, we estimated the chromospheric activity index R'_HK,PHOENIX_, along with the corresponding bolometric calibrated index R_HK,PHOENIX_, taking these parameters into account.
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We provided the database of the derived chromospheric activity parameters for 1,122,495 LAMOST LRS spectra of solar-like stars. Our calculations show that logR'_HK,PHOENIX_ is approximately linearly correlated with logR'_HK,classic_. The results based on our extensive archive support the view that the dynamo mechanism of solar-like stars is generally consistent with the Sun; and the value of the solar chromospheric activity index is located at the midpoint of the solar-like star sample.
We further investigated the proportions of solar-like stars with different chromospheric activity levels (very active, active, inactive, and very inactive). The investigation indicates that the occurrence rate of high levels of chromospheric activity is lower among the stars with effective temperatures between 5600 and 5900K.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/688/A23 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024A&A...688A..23Z ui.adsabs.harvard.edu/abs/2024A%26A...688A..23Z ↗
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/688/a23 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/688/a23 | 13 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 | |
| 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 |