6 papers
Tracing Early Cosmic Chemical Enrichment: A Uniform XMM-Newton Survey of Metallicity in Galaxy Groups and Clusters
Anne E Blackwell, Joel N Bregman, Sophia Chan Davis
Observed metal abundances in the intracluster medium (ICM) of galaxy groups and clusters, , exceed what is expected from present-day stellar populations alone. Galaxy clus…
Modeling the cool gas clumps in the circumgalactic medium
Hang Yang, Zhijie Qu, Joel N. Bregman +1
A major challenge in CGM studies is determining the three-dimensional (3D) properties from the observed projected observations. Here, we decompose the 3D gas density and spatial di…
CO-CHANGES II: spatially resolved IRAM 30M CO line observations of 23 nearby edge-on spiral galaxies
Yan Jiang, Jiang-Tao Li, Qing-Hua Tan +6
Molecular gas, as the fuel for star formation, and its relationship with atomic gas are crucial for understanding how galaxies regulate their star forming (SF) activities. We condu…
Early Enrichment Population Theory at High Redshift
Anne E. Blackwell, Joel N. Bregman
An Early Enrichment Population (EEP) has been theorized to produce the observed intracluster medium (ICM) metallicity of galaxy clusters. This population likely existed at high red…
Probing the He II re-Ionization ERa via Absorbing C IV Historical Yield (HIERACHY) II: Project Design, Current Status, and Examples of Initial Data Products
Jiang-Tao Li, Xiaodi Yu, Huiyang Mao +22
The He II reionization epoch is expected to take place at . In this stage, the helium and metals in the inter-galactic medium (IGM) are further ionized with additional co…
eDIG-CHANGES III: the lagging eDIG revealed by multi-slit spectroscopy of NGC 891
Li-Yuan Lu, Jiang-Tao Li, Carlos J. Vargas +9
The kinematic information of the extraplanar diffuse ionized gas (eDIG) around galaxies provides clues to the origin of the gas. The eDIG-CHANGES project studies the physical and k…