14–18 Jul 2025
Leibniz Institute for Astrophysics Potsdam (AIP)
Europe/Berlin timezone

JWST observations of the host galaxies in extremely red and obscured quasars

Not scheduled
20m
Conference Room, Maria-Margaretha-Kirch building (Leibniz Institute for Astrophysics Potsdam (AIP))

Conference Room, Maria-Margaretha-Kirch building

Leibniz Institute for Astrophysics Potsdam (AIP)

An der Sternwarte 16 14482 Potsdam, Germany
Poster presentation Other topics in galaxy formation

Speaker

Yu-Ching Chen (Johns Hopkins University)

Description

Extremely red quasars provide crucial insights into galaxy evolution, as they represent an obscured phase of quasar growth and a potential early blowout stage driven by quasar feedback. However, directly studying their host galaxies is challenging because the intense quasar emission often outshines the underlying stellar populations. Understanding these hosts is essential for constraining the connection between quasars and their galaxies during cosmic noon, the peak of galaxy and black hole growth. With JWST’s high angular resolution and unprecedented infrared sensitivity, we can now investigate quasar feedback with spatially resolved spectroscopy. In this talk, I will present our efforts to model the host galaxy continuum of obscured quasars using JWST NIRSpec Integral Field Unit data. I will introduce our new method for quasar subtraction and discuss our findings on host galaxy properties—including stellar mass, morphology, and star formation history—in these extremely red and obscured quasars. Finally, I will examine the broader implications of this finding for galaxy evolution and quasar feedback.

Primary author

Yu-Ching Chen (Johns Hopkins University)

Co-authors

Presentation materials

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