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Searching within Galaxies for the Earliest Signs of Quenching With Spatially Resolved Star Formation Histories in UVCANDELS Galaxies at z < 0.3

  • Authors: Charlotte Olsen, Eric Gawiser, Charlotte Welker, Harry Teplitz, Kartheik Iyer, Xin Wang, Marc Rafelski, Rogier A. Windhorst, Anton Koekemoer, Anahita Alavi, Ben Sunnquist, Norman Grogin, Yicheng Guo, Christopher J. Conselice, L. Y. Aaron Yung, Kalina Nedkova, Bahram Mobasher, Ray A. Lucas, Vihang Mehta, Y. Sophia Dai, Jonathan P. Gardner

Charlotte Olsen et al 2026 The Astrophysical Journal 1001 .

  • Provider: AAS Journals

Caption: Figure 4.

Postage stamps of the edge-on galaxy UVCANDELS 20524 show that while the F160W image is bulge-dominated, the F275W image is bright mainly in the outskirts—especially the upper left—rather than the center. This is consistent with dust obscuration, as supported by the AV map. However, the UV-bright region in the lower right does not show elevated properties, including AV, ruling out dust obscuration there. The SFR and stellar mass density maps show enhanced values along the top edge of the disk. The t50 map reveals both older- and younger-than-average regions in this area. Overall, these features may result from projection effects in an edge-on galaxy.

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