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A MaNGA about the Legacy. I. Connecting the Assembly of Stellar Halo with the Average Star Formation History in Low-redshift Massive Galaxies

  • Authors: Xiaoya Zhang, 张 筱雅, Song Huang, 黄 崧, Meng Gu, 顾 梦

Xiaoya Zhang et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 3.

The two subsamples are split by position on the ﹩{{\rm{log}}}_{10}({M}_{\star ,R\gt 20\,{\rm{kpc}}}/{M}_{\odot })﹩ vs. σ⋆,cen plane (top left). For galaxies with similar outskirt stellar mass, orange pentagons represent the galaxies with larger inner velocity dispersion (high σ*), and blue stars represent galaxies with smaller inner velocity dispersion (low σ*). The background gray circles stand for the total sample. The top-right plot displays the radial profiles of stellar mass density (M kpc–2), with the thick lines representing the median profiles. Using the same color-coding convention, the histograms show the distributions of their physical parameters, including M* (bottom left), σ⋆,cen (bottom middle), and redshift (bottom right). Orange solid lines and blue dashed lines correspond to high* and low* samples, respectively, and the gray-filled bar is the total sample. The Jupyter notebook for reproducing this figure can be found here: . This repository is also available on Zenodo (https://doi.org/10.5281/zenodo.17979404).

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