Asymmetric spatial distribution of sub-solar metallicity stars in the Milky Way nuclear star cluster

Feldmeier-Krause A.,Kerzendorf W.,Do T.,Nogueras-Lara F.,Neumayer N.,Walcher C. J.,Seth A.,Schödel R.,de Zeeuw P. T.,Hilker M.,Lützgendorf Nora,Kuntschner H.,Kissler-Patig M.

Monthly Notices of the Royal Astronomical Society（2020）

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摘要

We present stellar metallicity measurements of more than 600 late-type stars in the central 10 pc of the Galactic Centre. Together with our previously published KMOS data, this data set allows us to investigate, for the first time, spatial variations of the nuclear star cluster's metallicity distribution. Using the integral-field spectrograph KMOS (VLT), we observed almost half of the area enclose...

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Stars: late-type,Galaxy: centre,infrared: stars

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