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- W3100296931 abstract "The Gaia H-R diagram shows the presence of apparently young stars at high tangential velocities. Using a simple analytical model, I show that these stars are likely to be blue stragglers. Once normalized to red giant stars, the fraction of nearby halo blue stragglers is of order 20%, and remarkably close to that measured in dwarf galaxies. Motivated by this similarity, I apply to field blue stragglers scaling relations inferred from blue stragglers in dwarf galaxies. Doing this for the Milky Way halo returns an average stellar density of and a dark matter density of within 2 kpc from the Sun. These values compare favorably to other determinations available in the literature but are based on an independent set of assumptions. A few considerations of this methodology are discussed, most notably that the correlation between the dark matter halo core density and stellar mass seems to hold from dwarf galaxies to the nearby Milky Way halo." @default.
- W3100296931 created "2020-11-23" @default.
- W3100296931 creator A5086796344 @default.
- W3100296931 date "2020-06-10" @default.
- W3100296931 modified "2023-10-04" @default.
- W3100296931 title "Connecting the Local Stellar Halo and Its Dark Matter Density to Dwarf Galaxies via Blue Stragglers" @default.
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- W3100296931 doi "https://doi.org/10.3847/1538-4357/ab929f" @default.
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