activity
20092026
most citedCo-formation of the Galactic disc and the stellar halo

1k citations · 8k across the 111 of their papers we have counts for

collaborators

112 papers

astro-ph.GA2026

Slow stellar halo rotation as a signature of disc flips and GES-like mergers

Kirill Batrakov, Alis J. Deason, Francesca Fragkoudi +3

The stellar halo of the Milky Way (MW) exhibits a weak net prograde rotational signal ( km~s), yet its origin remains unexplained. To investigate this, we u…

astro-ph.GA2026

Stellar streams around dwarf galaxies are observationally rare in the local Universe

Joanna D. Sakowska, David Martíınez-Delgado, Sarah Pearson +6

The frequency and properties of stellar streams around dwarf galaxies remain observationally under-explored. Building a statistically significant sample is challenging because dwar…

astro-ph.GA2026★ 1 cited

Bar-halo interaction: the role of orbital anisotropy

Paula Gherghinescu, Francesca Fragkoudi, Alis Deason

We investigate the dynamical response of dispersion-dominated halo populations to a rotating galactic bar, focusing on how the underlying halo phase space distribution function (DF…

astro-ph.GA2026

The velocity field of our Milky Way outer stellar halo based on DESI DR2

Songting Li, Wenting Wang, Sergey E. Koposov +53

Using 64,000 halo K giants from Dark Energy Spectroscopic Instrument (DESI) second Data Release (DR2), we decompose the Milky Way (MW) stellar halo between 3 and 160 kpc into metal…

astro-ph.GA2026★ 1 cited

Stirring Things Up: Bar-induced substructures in the stellar halo of a cosmological Milky Way analogue

Thomas Tomlinson, Francesca Fragkoudi, Andreia Carrillo +8

The stellar halo of the Milky Way contains the remnants of past accretion events, which could be detectable as substructures in the classical integrals of motion space, such as ene…

astro-ph.GA2025

The Milky Way stellar halo is twisted and doubly broken: insights from DESI DR2 Milky Way Survey observation

Songting Li, Wenting Wang, Sergey E. Koposov +45

Using K giants from the second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI) Milky Way (MW) Survey, we measure the shape, orientation, radial profile, and d…