244 citations · 3.2k across the 67 of their papers we have counts for
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Instability of Magnetized Ionization Fronts Surrounding H II Regions
Jeong-Gyu Kim, Woong-Tae Kim
An ionization front (IF) surrounding an H II region is a sharp interface where a cold neutral gas makes transition to a warm ionized phase by absorbing UV photons from central star…
Effects of Spiral Arms on Star Formation in Nuclear Rings of Barred-spiral Galaxies
Woo-Young Seo, Woong-Tae Kim
We use hydrodynamic simulations to study the effect of spiral arms on the star formation rate (SFR) occurring in nuclear rings of barred-spiral galaxies. We find that spiral arms c…
Nature of the Wiggle Instability of Galactic Spiral Shocks
Woong-Tae Kim, Yonghwi Kim, Jeong-Gyu Kim
Gas in disk galaxies interacts nonlinearly with an underlying stellar spiral potential to form galactic spiral shocks. While numerical simulations typically show that spiral shocks…
Three Dimensional Hydrodynamic Simulations of Multiphase Galactic Disks with Star Formation Feedback: II. Synthetic HI 21 cm Line Observations
Chang-Goo Kim, Eve C. Ostriker, Woong-Tae Kim
We use three-dimensional numerical hydrodynamic simulations of the turbulent, multiphase atomic interstellar medium (ISM) to construct and analyze synthetic HI 21 cm emission and a…
Gaseous Spiral Structure and Mass Drift in Spiral Galaxies
Yonghwi Kim, Woong-Tae Kim
We use hydrodynamic simulations to investigate nonlinear gas responses to an imposed stellar spiral potential in disk galaxies. The gaseous medium is assumed to be infinitesimally…