Karl Fiteni's team identifies Milky Way star formation boundary at 40,000 light-years
Updated
Updated · Space.com · Apr 28
Karl Fiteni's team identifies Milky Way star formation boundary at 40,000 light-years
13 articles · Updated · Space.com · Apr 28
The international team analyzed data from 100,000 giant stars using LAMOST, APOGEE, and Gaia telescopes, revealing the star-forming disk ends at a 40,000 light-year radius.
Their findings show a U-shaped age distribution, with younger stars inside the boundary and older stars at both the center and outer edges, shaped by stellar migration.
The study suggests star formation halts at this radius possibly due to the galaxy's structure or disk warp, and the results were published in Astronomy & Astrophysics on April 13.
Could new stars be forming at the galaxy's edge, just too faintly for us to see?
Since stars constantly migrate, is our solar system's quiet neighborhood only temporary?
What happens to cosmic gas beyond the Milky Way's 40,000 light-year 'star nursery' boundary?
Is a central bar or a galactic collision choking off star birth in the Milky Way?
If our Sun migrated to a safer zone, is life rare in the inner parts of galaxies?