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Identical or fraternal twins? The chemical homogeneity of wide binaries from Gaia DR2

Hawkins, Keith; Lucey, Madeline; Ting, Yuan-Sen; Ji, Alexander P; Katzberg, Dustin; Thompson, Megan; El-Badry, Kareem; Teske, Johanna; Nelson, Tyler; Carillo, Andreia


One of the high-level goals of Galactic archaeology is chemical tagging of stars across the Milky Way to piece together its assembly history. For this to work, stars born together must be uniquely chemically homogeneous. Wide binary systems are an important laboratory to test this underlying assumption. Here, we present the detailed chemical abundance patterns of 50 stars across 25 wide binary systems comprised of main-sequence stars of similar spectral type identified in Gaia DR2 with the aim...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stz3132
Access Rights: Open Access


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