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astro-ph.GA2026
The Merger-Driven Origin of the Vast Extended Stellar Disc Around the Andromeda Galaxy
C. Tsakonas, M. Arnaboldi, F. Hammer +4
The closest giant spiral, the Andromeda galaxy (M31), shows compelling evidence for a recent, gas-rich major merger event. Pronounced substructures in its inner halo and a kinemati…
astro-ph.GA2025★ 5 cited
The survey of planetary nebulae in Andromeda (M31) VII. Predictions of a major merger simulation model compared with chemodynamical data of the disc and inner halo substructures
C. Tsakonas, M. Arnaboldi, S. Bhattacharya +5
The nearest giant spiral, M31, exhibits a kinematically hot stellar disc, a global star formation episode ~2-4 Gyr ago, and conspicuous substructures in its stellar halo that are s…