Stellar Ages of TESS Stars, Adopting Spectroscopic Data from Gaia GSP-Spec

Stellar Ages of TESS Stars, Adopting Spectroscopic Data from Gaia GSP-Spec

The Gaia DR3 GSP-spec/TESS (GST) catalog combines asteroseismic data from NASA’s TESS mission with spectroscopic data from ESA’s Gaia mission, and contains about 116,000 Red Clump and Red Giant Branch stars, surpassing previous datasets in size and precision. The Bayesian tool PARAM is used to estim...

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Veröffentlicht in:Galaxies 2024-12, Vol.12 (6), p.76
Hauptverfasser: Denis, Elisa, de Laverny, Patrick, Miglio, Andrea, Recio-Blanco, Alejandra, Alonso Palicio, Pedro, Montalban, Josefina, Abia, Carlos
Format: Artikel
Sprache:eng
Schlagworte:
Age
asteroseismology
Astronomical models
automatic stellar parametrisation
fundamental parameters
Kinematics
Milky Way
Red giant stars
Spectroscopy
Stars
Stellar age
stellar content
Stellar models
Stellar seismology
Trends
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Beschreibung
Zusammenfassung:The Gaia DR3 GSP-spec/TESS (GST) catalog combines asteroseismic data from NASA’s TESS mission with spectroscopic data from ESA’s Gaia mission, and contains about 116,000 Red Clump and Red Giant Branch stars, surpassing previous datasets in size and precision. The Bayesian tool PARAM is used to estimate stellar ages using MESA models for, currently, 30,297 stars. This GST catalog, which includes kinematics and chemical information, is adopted for studying the Milky Way’s structure and evolution, in particular its thin and thick disk components.
ISSN:2075-4434
2075-4434
DOI:10.3390/galaxies12060076