activity
20232026
most citedThe discovery of the faintest known Milky Way satellite using UNIONS

2 citations · 2 across the 9 of their papers we have counts for

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5 papers · 1 filter

astro-ph.GA2026

The primordial nature of the C-19 stellar stream

Kim A. Venn, Zhen Yuan, Nicolas F. Martin +32

Stellar streams, remnants of compact star systems stretched out by the tidal forces of the Milky Way, offer a unique way to study stellar populations that formed billions of years…

astro-ph.GA2025

GHOST commissioning science results -- IV: Chemodynamical analyses of Milky Way satellites Sagittarius II and Aquarius II

Daria Zaremba, Kim Venn, Christian R. Hayes +28

We present Gemini/GHOST high-resolution spectra of five stars observed in two low surface brightness Milky Way satellites, Sagittarius II (Sgr2) and Aquarius II (Aqu2). For Aqu2, t…

astro-ph.GA2025

Deep in the Fields of the Andromeda Halo: Discovery of the Pegasus VII dwarf galaxy in UNIONS

Simon E. T. Smith, Alan W. McConnachie, Stephen Gwyn +8

We present the newly discovered dwarf galaxy Pegasus VII (Peg VII), a member of the M31 sub-group which has been uncovered in the photometric catalogs from the Ultraviolet Nea…

astro-ph.GA2024

GHOST Commissioning Science Results III: Characterizing an iron-poor damped Lyman system

Trystyn A. M. Berg, Christian R. Hayes, Stefano Cristiani +20

The Gemini High-resolution Optical SpecTrograph (GHOST) is a new echelle spectrograph available on the Gemini-South telescope as of Semester 2024A. We present the first high resolu…

astro-ph.GA2023★ 2 cited

The discovery of the faintest known Milky Way satellite using UNIONS

Simon E. T. Smith, William Cerny, Christian R. Hayes +14

We present the discovery of Ursa Major III/UNIONS 1, the least luminous known satellite of the Milky Way, which is estimated to have an absolute V-band magnitude of $+2.2^{+0.4}_{-…