May 15 – 17, 2026
College of Hakka Studies at NYCU, Zhubei, Hsinchu County 國立陽明交通大學客家學院(竹北六家校區)
Asia/Taipei timezone

Galaxy Structure and Radial Star Formation: Tracing Gas Content and Efficiency Across Galaxy Populations

Not scheduled
15m
College of Hakka Studies at NYCU, Zhubei, Hsinchu County 國立陽明交通大學客家學院(竹北六家校區)

College of Hakka Studies at NYCU, Zhubei, Hsinchu County 國立陽明交通大學客家學院(竹北六家校區)

No. 1, Sec. 1, Liujia 5th Rd., Zhubei City, Hsinchu County 302, Taiwan 30272新竹縣竹北市六家五路一段1號
Board: 32

Speaker

Angelo George (ASIAA, Taipei)

Description

I investigate spatially resolved star formation and gas properties in KILOGAS galaxies using ALMA and optical IFU data, as part of my ongoing work at ASIAA, through radial profiles of specific star formation rate (sSFR), gas fraction ($f_g$), and star formation efficiency (SFE). Galaxies are divided into star-forming, green valley, and quiescent populations to probe evolutionary pathways. I find systematic differences in the shapes and normalizations of these profiles, with green valley systems exhibiting intermediate behaviour but distinct radial gradients. By connecting these trends to structural properties, including stellar mass distribution and bulge-to-disk dominance, I assess the role of internal galaxy structure in regulating star formation and quenching. These results support a picture in which quenching proceeds in a spatially non-uniform manner, linked to galaxy structure and gas depletion.

Participate the oral/poster presentation award competition No

Authors

Angelo George (ASIAA, Taipei) Dr Li-Hwai Lin (ASIAA, Taipei)

Presentation materials

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