演講資訊

Dr. Yen-Ting Lin (Astronomy & Astrophysics, Academia Sinica)


"Progresses on the Study of Galaxy--Halo Connection"

時間/地點: 2022-12-16 14:00 [S4-1013]

摘要:

The so-called galaxy--halo connection is a vast topic concerning how galaxies populate their host dark matter halos. I will present some progresses we have made under this grand theme, including (1) the detection of assembly bias signal with the help of constrained simulation Elucid, (2) a subhalo abundance matching scheme that utilizes a new dark matter halo property, which is shown to perform better than the popular V_peak model, (3) a graphic neural network model that can accurately predict the stellar mass and color of galaxies at redshift z=0-5 based purely on dark matter subhalo properties along the whole merger tree, and (4) a novel way of studying cluster galaxy population evolution that fully takes into account the scatter in the mass--observable relation.

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