Ursa Major III/UNIONS 1: the darkest galaxy ever discovered?

The recently discovered stellar system Ursa Major III/UNIONS 1 (UMa3/U1) is the faintest known Milky Way satellite to date. With a stellar mass of \(16^{+6}_{-5}\,\rm M_\odot\) and a half-light radius of \(3\pm1\)pc, it is either the darkest galaxy ever discovered or the faintest self-gravitating st...

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Veröffentlicht in:	arXiv.org 2024-02
Hauptverfasser:	Errani, Raphaël, Navarro, Julio F, Smith, Simon E T, McConnachie, Alan W
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomical models Binary stars Dark matter Dispersion Dwarf galaxies Galactic evolution Gravitation Milky Way Physics - Astrophysics of Galaxies Star & galaxy formation Star clusters Stellar mass Unions
Online-Zugang:	Volltext
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