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20242026
most citedRevisiting the Radial Metallicity Gradient-Age Relation in the Milky Way's Thin and Thick Disks

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astro-ph.GA20261 cited

Revisiting the Radial Metallicity Gradient-Age Relation in the Milky Way's Thin and Thick Disks

Ao Chen, Juntai Shen, Chun Wang +1

Galactic disks typically exhibit a negative radial metallicity gradient, indicating faster enrichment in the inner regions. Recent studies report that this gradient becomes flatter…

astro-ph.GA2025

A North-South Metallicity Asymmetry in the Outer Galactic disk -- Evidence for the Pericentric Passage of the Sagittarius Dwarf Galaxy

Chun Wang, Yang Huang, Timothy C. Beers +4

We present maps of the mean metallicity distributions on the Galactocentric -- plane at different azimuthal angles using red clump stars selected from the LAMOST and APOGEE s…

astro-ph.GA2025

The Vertical Metallicity Gradient of the Galactic Disk for Mono-Age Stellar Populations in LAMOST

Gaohuan Long, Haibo Yuan, Shuai Xu +3

The vertical metallicity gradient of the Galactic disk offers valuable insights into the disk's formation and chemical evolution over time. We utilized the LAMOST-LRS young stellar…

astro-ph.GA2024

The Stellar Disk Structure Rrevealed by the Mono-age Populations of the LAMOST Red Clump Sample

Zheng Yu, Bingqiu Chen, Jianhui Lian +2

Understanding the structure of the Galactic disk is crucial for understanding the formation and evolutionary history of the Milky Way. This study examines the structure of the Gala…

astro-ph.GA2024

Mapping the Galactic disk with the LAMOST and Gaia Red clump sample: VIII: Mapping the kinematics of the Galactic disk using mono-age and mono-abundance stellar populations

Weixiang Sun, Yang Huang, Han Shen +5

We present a comprehensive study of the kinematic properties of the different Galactic disk populations, as defined by the chemical abundance ratios and stellar ages, across a larg…