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The Faintest Dwarf Galaxies
DOI: 10.1146/annurev-astro-091918-104453 Bibcode: 2019ARA&A..57..375S

Simon, Joshua D.

The lowest luminosity (L < 105L) Milky Way satellite galaxies represent the extreme lower limit of the galaxy luminosity function. These ultra-faint dwarfs are the oldest, most dark matter-dominated, most metal-poor, and least chemically evolved stellar systems known. They therefore provide unique windows into the formati…

2019 Annual Review of Astronomy and Astrophysics
Gaia 508
Accuracy and Precision of Industrial Stellar Abundances
DOI: 10.1146/annurev-astro-091918-104509 Bibcode: 2019ARA&A..57..571J

Jofré, Paula; Heiter, Ulrike; Soubiran, Caroline

There has been an incredibly large investment in obtaining high-resolution stellar spectra for determining chemical abundances of stars. This information is crucial to answer fundamental questions in astronomy by constraining the formation and evolution scenarios of the Milky Way as well as the stars and planets residing in it. We have just entere…

2019 Annual Review of Astronomy and Astrophysics
Gaia 154