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Down-bending Breaks in Galactic Disks Are an Intrinsic By-product of Inside-out Growth

  • Authors: Liufei Chen, 柳霏 陈, Min Du, 敏 杜, Shuai Lu, 帅 卢, Jing Li, 静 李, Luis C. Ho

Liufei Chen et al 2026 The Astrophysical Journal Letters 1003 .

  • Provider: AAS Journals

Caption: Figure 6.

Upper panel: median stellar surface density profiles of type II disk galaxies for different stellar age populations: all stars, ≤ 2 Gyr, 2–5 Gyr, 5–8 Gyr, and >8 Gyr. Lower panel: mass-weighted age profiles for progressively older stellar populations: all stars, >2 Gyr, >5 Gyr, and >8 Gyr.

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