Optically thin HC3N/HC5N isotopologues yield 12C/13C ≈ 37 (≈48 after fractionation correction) in G+0.693, matching 3–5 kpc disc gas and implying bar-driven inflow into the CMZ.
A., Gilmore, G., & Irwin, M
3 Pith papers cite this work. Polarity classification is still indexing.
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Chemical mixture modeling of Gaia and APOGEE stars indicates that most kinematic halo substructures are contaminated with Gaia-Sausage/Enceladus debris and heated disc stars, so no halo substructure is a chemically pure population.
RR Lyrae stars yield metallicity measurements for Milky Way halo substructures including Gaia Sausage/Enceladus at [Fe/H] = -1.57 dex, with some features like ED-1 showing disk contamination and others like Shiva and Shakti suggested as in-situ.
citing papers explorer
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High $^{12}$C/$^{13}$C isotopic ratios toward G+0.693-0.027: evidence for gas inflow to the Central Molecular Zone
Optically thin HC3N/HC5N isotopologues yield 12C/13C ≈ 37 (≈48 after fractionation correction) in G+0.693, matching 3–5 kpc disc gas and implying bar-driven inflow into the CMZ.
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Chemical decoding of kinematic substructures in the Galactic halo
Chemical mixture modeling of Gaia and APOGEE stars indicates that most kinematic halo substructures are contaminated with Gaia-Sausage/Enceladus debris and heated disc stars, so no halo substructure is a chemically pure population.