ODIN: Clustering Analysis of 14,000 Lyα-emitting Galaxies at z = 2.4, 3.1, and 4.5

Lyα emitters (LAEs) are star-forming galaxies that efficiently probe the spatial distribution of galaxies in the high-redshift Universe. The spatial clustering of LAEs reflects the properties of their individual host dark matter halos, allowing us to study the evolution of the galaxy-halo connection. We analyze the clustering of 5233, 5220, and 3706 LAEs at z = 2.4, 3.1, and 4.5, respectively, in the 9 deg² COSMOS field from the One-hundred-deg² DECam Imaging in Narrowbands survey. After correcting for redshift-space distortions, LAE contamination rates, and the integral constraint, the observed angular correlation functions imply linear galaxy bias factors of b = 1.7 2 − 0.27 + 0.26 , 2.0 1 − 0.29 + 0.26 , and 2.9 5 − 0.46 + 0.40 for z = 2.4, 3.1, and 4.5, respectively. The median dark matter halo masses inferred from these measurements are log ( M h / M ⊙ ) = 11.4 4 − 0.28 + 0.30 , 11.1 3 − 0.26 + 0.26 , and 10.8 5 − 0.24 + 0.24 for the three samples, respectively. The analysis also reveals that LAEs occupy roughly 3%-7% of the halos whose clustering strength matches that of the LAEs.