【CSST discussion】AGN-Host galaxy SED decomposition


Title: AGN-Host galaxy SED decomposition


Abstract: The decomposition of the spectral energy distribution (SED) of active galactic nuclei (AGN) and their host galaxies offers critical insights into the physical processes governing both components. AGN SEDs span a wide range of wavelengths, encompassing synchrotron emission from jets, thermal emission from the accretion disk, and infrared radiation from the dust torus. In contrast, host galaxy SEDs are shaped by stellar population processes and interstellar dust, which complicates the interpretation of the AGN-host system as a whole. This talk will review the current methods used for AGN-host galaxy SED decomposition, focusing on both imaging and spectral techniques. I will highlight recent advancements in these methods, with particular emphasis on their ability to constrain the accretion and star formation histories of AGN and their host galaxies. Additionally, I will discuss key scientific questions, including the evolution of the AGN-host relationship, the contribution of star formation to AGN activity, and the role of dust in shaping AGN emission. Finally, I will outline future directions in AGN-host galaxy SED decomposition, focusing on the integration of multiwavelength datasets from upcoming surveys and space telescopes.


Speaker: 
Ruancun Li(李阮存)
Place: 
KIAA Shu Qi Meeting Room https://zoom.us/j/87944396019?pwd=WXpuenBkK2ttSzZGbTg4RHJjd1RMZz09 会议号: 879 4439 6019 密码: 658470
Time: 
Thursday, April 10, 2025 - 10:00AM