Authors:

Ethan Pinarski

Date Created:

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About Paper:

Protoclusters are young, forming galaxy clusters in the distant Universe observed well before they fully collapse into a dynamically relaxed system. The details and mechanisms behind protoclusters evolving into larger galaxy clusters remain uncertain. The One-hundred-deg2 DECam Narrow-Band (ODIN) survey is designed to enable the detection of the large-scale structure (LSS), the locations of protoclusters, and to trace the evolution of protolcusters over cosmic time. The ODIN survey is sampling three redshift slices, z ∼ 2.4, 3.1, and 4.5 corresponding to 2.7, 2.0, and 1.3 billion years after the Big Bang), and gathering multi-band photometric and spectroscopic data from seven widely separated regions in the night sky. Spectroscopic observations have the potential to uncover the differences in chemical composition and cosmic ages in galaxies residing in protocluster environments. By combining the datasets from ODIN and the Dark Energy Spectroscopic Instrument (DESI), our project is aimed at i) confirming the targeted galaxies at these cosmic slices selected by ODIN; and ii) investigating the physical properties of the galaxies as a function of large-scale environment. By confirming these galaxies with spectroscopy we can not only detect the sites of protoclusters and detect the large-scale structure, but also better understand the evolution of protoclusters in the early Universe.

Source:

Purdue University / 2023

Topics:

No topics listed

Co-authors:

Ethan Pinarski