G

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GISPERT , P.

Last name: GISPERT

First name: P.

2023 (v1)

Journal article

Metadata-only

Spectroscopic age estimates for APOGEE red-giant stars: Precise spatial and kinematic trends with age in the Galactic disc

Anders, F. Gispert, P. Ratcliffe, B.

Over the last few years, many studies have found an empirical relationship between the abundance of a star and its age. Here we estimate spectroscopic stellar ages for 178 825 red-giant stars observed by the APOGEE survey with a median statistical uncertainty of 17%. To this end, we use the supervised machine learning technique XGBoost, trained...

Uploaded on: January 13, 2025