Published June 27, 2022 | Version v1

The solar neighbourhood age-metallicity relation from Gaia white dwarf-main sequence binaries

  • 1. Universitat Politècnica de Catalunya
  • 2. INAF

Description

The age-metallicity relation is a fundamental observational tool for constraining the chemical evolution of the Galactic disc in time. In this work we analyse the observational properties of this relation using binary stars that evolved avoiding mass transfer episodes consisting of a main sequence star - from which we can derive the metallicities - and a white dwarf - from which we can derive the total ages of the systems. Our sample consists of 189 WD+MS common proper motion pairs (CPMPs) identified within Gaia.

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