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The COMBS Survey -- III. The Chemodynamical Origins of Metal-Poor Bulge Stars
Madeline Lucey, Keith Hawkins, Melissa Ness +6
The characteristics of the stellar populations in the Galactic Bulge inform and constrain the Milky Way's formation and evolution. The metal-poor population is particularly importa…
A2A: 21,000 bulge stars from the ARGOS survey with stellar parameters on the APOGEE scale
S. M. Wylie, O. E. Gerhard, M. K. Ness +3
We use the data-driven method, The Cannon, to bring 21,000 stars from the ARGOS bulge survey, including 10,000 red clump stars, onto the parameter and abundance scales of the cross…
An [/Fe]-enhanced thick disk in a Milky Way Analogue
Nicholas Scott, Jesse van de Sande, Sanjib Sharma +5
The Milky Way disk consists of two prominent components - a thick, alpha-rich, low-metallicity component and a thin, metal-rich, low-alpha component. External galaxies have been sh…
The GALAH Survey: No chemical evidence of an extragalactic origin for the Nyx stream
Daniel B. Zucker, Jeffrey D. Simpson, Sarah L. Martell +20
The results from the ESA Gaia astrometric mission and deep photometric surveys have revolutionized our knowledge of the Milky Way. There are many ongoing efforts to search these da…
The survey of planetary nebulae in Andromeda (M31) III. Constraints from deep planetary nebula luminosity functions on the origin of the inner halo substructures in M31
Souradeep Bhattacharya, Magda Arnaboldi, Ortwin Gerhard +4
The Andromeda (M31) galaxy displays several substructures in its inner halo whose origin as remnants of accreted satellites or perturbations of the pre-existing disc are encoded in…
The GALAH Survey: Accreted stars also inhabit the Spite Plateau
Jeffrey D. Simpson, Sarah L. Martell, Sven Buder +22
The ESA Gaia astrometric mission has enabled the remarkable discovery that a large fraction of the stars near the Solar neighbourhood appear to be debris from a single in-falling s…