The role of radial migration on tracing lithium evolution in the Galactic disk

Abstract

With the calculated guiding center radius $R_{guiding}$ and birth radius $R_{birth}$, we investigate the role of radial migration on the description of lithium evolution in the Galactic disk based on the upper envelope of the A(Li) vs. [Fe/H] diagram. Using migration distances, we find that stars in the solar neighborhood are born at different locations in the galactic disk, and cannot all be explained by models of chemical evolution in the solar neighborhood. It is found that the upper envelope of the A(Li) vs. [Fe/H] diagram varies significantly with $R_{birth}$, which explains the decrease of Li for super-metal-rich (SMR) stars because they are non-young stars born in the inner disk. The upper envelope of Li-$R_{birth}$ plane fits very well with chemical evolution models by Grisoni et al. for $R_{birth}=7-12$ kpc, outside which young stars generally lack sufficient time to migrate to the solar neighborhood. For stars born in the solar neighborhood, the young open clusters and the upper envelope of field stars with age $<$ 3 Gyr fit well with theoretical prediction. We find that calculations using stars with ages less than 3 Gyr are necessary to obtain an undepleted Li upper envelope, and that stars with solar age (around 4.5 Gyr) have depleted around 0.3 dex from the original value based on the chemical evolution model of Grisoni et al.

7 pages, 5 figures, accepted for publication in MNRAS

References in corpus (21)

• galpy: A Python Library for Galactic Dynamics
• The GALAH Survey: Scientific Motivation
• Riding the Spiral Waves: Implications of Stellar Migration for the Properties of Galactic Disks
• The Milky Way's circular velocity curve between 4 and 14 kpc from APOGEE data
• Systematic non-LTE study of the $-2.6\le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu
• Li abundances in F stars: planets, rotation and galactic evolution
• The AMBRE Project: chemical evolution models for the Milky Way thick and thin discs
• Discovery of ubiquitous lithium production in low-mass stars
• The AMBRE Project: Constraining the lithium evolution in the Milky Way
• Most Lithium-rich Low-mass Evolved Stars Revealed as Red Clump stars by Asteroseismology and Spectroscopy
• The Gaia-ESO Survey: Galactic evolution of lithium from iDR6
• Radial Migration from Metallicity Gradient of Open Clusters and Outliers
• The AMBRE project: a study of Li evolution in the Galactic thin and thick discs
• The Gaia-ESO Survey: Galactic evolution of lithium at high metallicity
• Explaining the decrease in ISM lithium at super-solar metallicities in the solar vicinity
• High-resolution Spectroscopic Study of Dwarf Stars in the Northern Sky: Lithium, Carbon, and Oxygen Abundances
• Open Clusters as Tracers on Radial Migration of the Galactic Disk
• Reliability and limitations of inferring birth radii in the Milky Way disk
• Migration in the shearing sheet and estimates for young open cluster migration
• The GALAH Survey: Accreted stars also inhabit the Spite Plateau
• The Gaia-ESO Survey: Probing the lithium abundances in old metal-rich dwarf stars in the Solar vicinity

Cited by in corpus (1)

• Evolution of lithium in the disc of the Galaxy and the role of novae