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Xiaodian Chen et al 2020 ApJS 249 18

The second data release from ZTF contains 781,602 periodic variables — 79.5% of which are newly discovered or newly classified — that can be used to investigate our galaxy’s disk structure and evolution.

Tereasa G. Brainerd and Adam Samuels 2020 ApJL 898 L15

A study of satellites of bright, isolated host galaxies shows a strong tendency for pairs of satellites to be located on the same side of their host, resulting in lopsided spatial distributions.

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