Formation of an Extended Stellar Halo around an Ultra-faint Dwarf Galaxy Following One of the Earliest Mergers from Galactic Building Blocks

Ultra-faint dwarf galaxies (UFDs) are promising observable proxies to building blocks of galaxies formed in the early universe. We study the formation and evolution of UFDs using cosmological hydrodynamic simulations. In particular, we show that a major merger of two building block galaxies with 390...

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Veröffentlicht in:	Astrophysical journal. Letters 2021-06, Vol.914 (1), p.L10, Article 10
Hauptverfasser:	Tarumi, Yuta, Yoshida, Naoki, Frebel, Anna
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy & Astrophysics Dwarf galaxies Galactic evolution Galaxies Galaxy distribution Galaxy formation Galaxy mergers Hydrodynamical simulations Local Group Metallicity Physical Sciences Science & Technology Simulation Space telescopes Stars & galaxies Stellar age
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