A MUSE source-blind survey for emission from the circumgalactic medium.

ABSTRACT: The recent detection of optical emission lines from the circumgalactic medium (CGM) in combined, large samples of low-redshift, normal galaxy spectra hints at the potential to map the cool (∼10⁴ kelvin) CGM in individual, representative galaxies. Using archival data from a forefront instrument (MUSE) on the VLT, we present a source-blind, wide-redshift-range (z ∼ 0 to 5) narrowband imaging survey for CGM emission. Our detected, resolved emission line sources are cataloged and include a 30-kiloparsec-wide Hα source likely tracing the CGM of a low-mass galaxy (stellar mass ∼ 10^8.78±0.42 solar mass) at z = 0.1723, a 60-kiloparsec-wide Ly α structure associated with a galaxy at z = 3.9076, and a 130-kiloparsec (∼r_vir)-wide [O II] fea

SUBMITTER: Zhang H 

PROVIDER: S-EPMC11801050 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature