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Compact Core, Extended Reach: A Bipolar Kiloparsec-scale Elongation in a Little Red Dot at z ≈ 5.5

  • Authors: Zhiyuan Ji, Yang Sun, Mauro Giavalisco, Yongda Zhu, George H. Rieke, Christina C. Williams, Michael V. Maseda, Jianwei Lyu, Marcia Rieke, Sandro Tacchella

Zhiyuan Ji et al 2026 The Astrophysical Journal Letters 1008 .

  • Provider: AAS Journals

Caption: Figure B2.

Best-fit zELDA Lyα profiles for the three alternative gas geometries, overlaid on the observed MUSE Lyα spectrum (black, with 1σ shading). The Bicone_X_Slab_Out model is shown in all panels as a red dashed line for comparison. The bottom panels show the residuals, demonstrating that Bicone_X_Slab_Out outperforms the other three geometries.

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