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Exploring Barred Galaxies in the Young Universe at $z\sim$2 Using $\textit{JWST}$ CEERS Data by Pritchett, Keith; Jogee, Shardha; Guo, Yuchen is a scholarly article available to read on EtoBox.

What is Exploring Barred Galaxies in the Young Universe at $z\sim$2 Using $\textit{JWST}$ CEERS Data about?

Studying barred galaxies at early epochs can shed light on the early evolution of stellar bars, their impact on secular evolution and the star formation activity of young galaxies, and the origins of present-day barred galaxies like the Milky Way. We analyze data from the James Webb Space Telescope (JWST) Cosmic Evolution Early Release Science (CEERS) Survey to explore the impact of rest-frame wavelength and spatial resolution on detecting and characterizing some of the youngest barred galaxies known to date. We apply both visual classification and ellipse-fitting to JWST F115W, F200W, and F444W images of the barred galaxy CEERS-30155 at $z\sim$2.136, an epoch when the universe was only $\sim$22$\%$ of its current age. We find that the stellar bar in CEERS-30155 is not visible in the F115W image, which traces rest-frame ultraviolet (UV) light at $z\sim$2, a rest-frame wavelength highly obscured by dust. The stellar bar is visible in the F200W image, but is most prominent in the F444W image, likely due to the F444W image tracing rest-frame near-infrared (NIR) light at $z\sim$2. Rest-frame NIR light is not obscured by dust and traces low-mass, long-lived stars that dominate the stell

Author

Pritchett, Keith; Jogee, Shardha; Guo, Yuchen

Published

2024

Language

EN