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Stellar and Dust Content of Galaxies at High Redshifts
December 3, 201811:30 am – 12:30 pm (CDT)

Stellar and Dust Content of Galaxies at High Redshifts


Irene Shivaei (University of Arizona)



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

Understanding the formation and evolution of galaxies remains one of the greatest challenges of modern cosmology. Some of the key questions are: How does the gas and dust content of galaxies evolve throughout cosmic time? What are the properties of stellar populations in early galaxies? Addressing these questions requires multi-wavelength observations of galaxy populations across cosmic time. In this talk, I will focus on what we learn from rest-frame optical spectroscopic surveys of galaxies during cosmic noon (z~1-3), and will show how incorporating multi-wavelength datasets, from UV to IR, advances our understanding of the stellar and dust content of high-redshift galaxies. I will investigate the advantages and shortcomings of some of the most commonly-used star formation rate indicators at high redshifts, and present results on the characteristics of dust emission/attenuation at z~2. These results will guide future JWST observations to higher redshifts and fainter objects, covering a larger dynamical range of galaxy populations across cosmic time.

Video Recording

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