A catalogue of asteroseismically calibrated ages for APOGEE DR17 - The predictions of a CatBoost machine learning model based on the [Mg/Ce] chemical clock and other stellar parameters

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Volume 685 (May 2024)

A&A, 685 (2024) A66

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Table 5

Stellar parameters of the two most massive young metal-poor stars.

Gaia DR3	T_eff (K)	[Fe/H] (dex)	log(𝑔) (dex)	L (L_⊙)	M (M_⊙)	Age_Tracks (Gyr)	Age_Model (Gyr)
5413575344812320640	$4936_{- 100}^{+ 100}$ $4936_{ - 100}^{ + 100}$	$- {1.27}_{- 0.1}^{+ 0.1}$ $- 1.27_{ - 0.1}^{ + 0.1}$	${1.874}_{- 0.038}^{+ 0.038}$ $1.874_{ - 0.038}^{ + 0.038}$	${362.56}_{- 101.13}^{+ 103.13}$ $362.56_{ - 101.13}^{ + 103.13}$	${1.850}_{- 0.57}^{+ 0.57}$ $1.850_{ - 0.57}^{ + 0.57}$	${1.04}_{- 0.50}^{+ 1.47}$ $1.04_{ - 0.5}^{ + 1.47}$	${1.75}_{- 0.46}^{+ 0.46}$ $1.75_{ - 0.46}^{ + 0.46}$
6045465055252946560	$4928_{- 100}^{+ 100}$ $4928_{ - 100}^{ + 100}$	$- {1.04}_{- 0.1}^{+ 0.1}$ $- 1.04_{ - 0.1}^{ + 0.1}$	${2.443}_{- 0.034}^{+ 0.034}$ $2.443_{ - 0.034}^{ + 0.034}$	${83.16}_{- 10.18}^{+ 10.18}$ $83.16_{ - 10.18}^{ + 10.18}$	${1.582}_{- 0.263}^{+ 0.263}$ $1.582_{ - 0.263}^{ + 0.263}$	${1.50}_{- 0.50}^{+ 0.95}$ $1.50_{ - 0.50}^{ + 0.95}$	${1.48}_{- 0.38}^{+ 0.38}$ $1.48_{ - 0.38}^{ + 0.38}$

Notes. The T_eff, [Fe/H], and log(𝑔) come from APOGEE DR17. The errors on log(𝑔) originate from the predictions of the neural network reported in APOGEE DR17. The two last columns refer to the ages obtained with the BaSTI stellar tracks and the CatBoostRegressor model, respectively.

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