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Chemical and stellar properties of early-type dwarf galaxies around the Milky Way

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arxiv 2209.09258 v1 pith:2SJOFLGD submitted 2022-09-19 astro-ph.GA

Vasily Belokurov , N. Wyn Evans This is my paper · ORCID
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keywords stellardwarfgalaxiespopulationsaroundbeenchemicaldwarfs
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Early-type dwarfs (ETDs) are the end points of the evolution of low-mass galaxies whose gas supply has been extinguished. The cessation of star-formation lays bare the ancient stellar populations. A wealth of information is stored in the colours, magnitudes, metallicities and abundances of resolved stars of the dwarf spheroidal and ultra-faint galaxies around the Milky Way, allowing their chemistry and stellar populations to be studied in great detail. Here, we summarize our current understanding, which has advanced rapidly over the last decade thanks to the flourishing of large-scale astrometric, photometric and spectroscopic surveys. We emphasise that the primeval stellar populations in the ETDs provide a unique laboratory to study the physical conditions on small scales at epochs beyond z=2. We highlight the observed diversity of star-formation and chemical enrichment histories in nearby dwarfs. These data can not yet be fully deciphered to reveal the key processes in the dwarf evolution but the first successful attempts have been made to pin down the sites of heavy element production.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Structural Diversity Among the Milky Way's Dwarf Spheroidal Satellites

    astro-ph.GA 2026-07 accept novelty 6.0 of 10

    Where model selection is decisive, the flexible αβγ density model is preferred over Plummer/Sersic/exponential, revealing diverse β and γ across dSphs and larger uncertainties in structural parameters.

  2. The satellite galaxies of the Milky Way and Andromeda

    astro-ph.GA 2025-02 unverdicted novelty 2.0 of 10

    A field review of Local Group dwarf satellites, their discovery, observed properties, and use as dark matter and galaxy evolution probes.

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