Solar twins in Gaia DR3 GSP-Spec
II. Age distribution and its implications for the Sun’s migration

The former is consistent with previous studies suggesting that a burst of star formation was triggered relatively recently in the Galactic disk encompassing the solar neighborhood. Our result strengthens the argument that interactions with the Sgr dwarf galaxy during pericentric passages may have induced bursts of star formation in the disk.

https://www.aanda.org/articles/aa/full_html/2026/03/aa58914-26/aa58914-26.html