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- W3103601023 endingPage "202" @default.
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- W3103601023 abstract "We conducted a large spectroscopic survey of 336 red giants in the direction of the Leo II dwarf galaxy using Hectochelle on the MMT, and conclude that 175 of them are members based on their radial velocities and surface gravities. Of this set, 40 stars have never before been spectroscopically observed. The systemic velocity of the dwarf is 78.3+-0.6 km/s with a velocity dispersion of 7.4+-0.4 km/s . We identify one star beyond the tidal radius of Leo II but find no signatures of uniform rotation, kinematic asymmetries, or streams. The stars show a strong metallicity gradient of -1.53+-0.10 dex/kpc and have a mean metallicity of -1.70+-0.02 dex. There is also evidence of two different chemodynamic populations, but the signal is weak. A larger sample of stars would be necessary to verify this feature." @default.
- W3103601023 created "2020-11-23" @default.
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- W3103601023 date "2017-02-21" @default.
- W3103601023 modified "2023-09-24" @default.
- W3103601023 title "A Multi-epoch Kinematic Study of the Remote Dwarf Spheroidal Galaxy Leo II" @default.
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- W3103601023 doi "https://doi.org/10.3847/1538-4357/836/2/202" @default.
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