Recent Star Formation in 0.5 < z < 1.5 Quiescent Galaxies

Rutkowski, Michael J., Zabelle, Bonnabelle, Hagen, Tyler, Cohen, Seth, Conselice, Christopher, Grogin, Norman, Guo, Yicheng, Hayes, Matthew, Kaviraj, Sugata, Koekemoer, Anton, Lucas, Ray A., Mantha, Kameswara Bharadwaj, Martin, Alec, Mehta, Vihang, Mobasher, Bahram, Hathi, Nimish, Nedkova, Kalina V., O'Connell, Robert, Rafelski, Marc, Scarlata, Claudia, Teplitz, Harry I., Wang, Xin, Windhorst, Rogier, Yung, Aaron and Team, the UVCANDELS (2025) Recent Star Formation in 0.5 < z < 1.5 Quiescent Galaxies. Astrophysical Journal Letters, 983 (2): L32. pp. 1-9. ISSN 2041-8205

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Observations of massive, quiescent galaxies reveal a relatively uniform evolution: following prolific star formation in the early Universe, these galaxies quench and transition to their characteristic quiescent state in the local Universe. The debate on the relative role and frequency of the process(es) driving this evolution is robust. In this Letter, we identify 0.5 ≲ z ≲ 1.5 massive, quiescent galaxies in the Hubble Space Telescope/UVCANDELS extragalactic deep fields using traditional color selection methods and model their spectral energy distributions, incorporating novel UV images. This analysis reveals ∼15% of massive, quiescent galaxies have experienced minor, recent star formation (

Item Type	Article
Identification Number	10.3847/2041-8213/adbe7c
Additional information	© 2025. The Author(s). Published by the American Astronomical Society. This is an open access article distributed under the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/
Keywords	astro-ph.ga, galaxy evolution, ultraviolet astronomy, astronomy and astrophysics, space and planetary science
Date Deposited	10 Jun 2025 15:06
Last Modified	08 Apr 2026 21:06