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The Origins of UV–optical Color Gradients in Star-forming Galaxies at z ∼ 2: Predominant Dust Gradients but Negligible sSFR Gradients

  • Authors: F. S. Liu, Dongfei Jiang, S. M. Faber, David C. Koo, Hassen M. Yesuf, Sandro Tacchella, Shude Mao, Weichen Wang, Yicheng Guo, Jerome J. Fang, Guillermo Barro, Xianzhong Zheng, Meng Jia, Wei Tong, Lu Liu, and Xianmin Meng

2017 The Astrophysical Journal Letters 844 L2.

  • Provider: AAS Journals

Caption: Figure 1.

Left panel: rest-frame global UVJ diagram for the parent samples after applying selection cuts 1–5 and 1–7 (see Section 1), respectively. The solid lines indicate the classification criterion provided by Williams et al. (2009). The arrow shows the Calzetti vector. Right panel: sSFR vs. stellar mass for only UVJ-defined SFGs after cuts 1–7. The solid line shows the best-fit linear relation to the SFMS. The transition galaxies, defined as having residuals ﹩{\rm{\Delta }}\,\mathrm{log}\,{\mathrm{sSFR}}_{\mathrm{NUV},\mathrm{cor}}\lt -0.45\,\mathrm{dex}﹩ (below the dashed line), are excluded in this analysis.

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