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8 papers · 2 filters
The D/H Ratio of Water Ice at Low Temperatures
Jeong-Eun Lee, Edwin A. Bergin
We present the modeling results of deuterium fractionation of water ice, H2, and the primary deuterium isotopologues of H3+ adopting physical conditions associated with the star an…
Low-End Mass Function of the Arches Cluster
Jihye Shin, Sungsoo S. Kim
The initial mass function (IMF) of the Arches cluster, which was formed a few million years ago in the harsh environment of the Galactic center (GC), has long been a target of inte…
The Infrared Medium-Deep Survey II: How to Trigger Radio-AGN? Hints from Their Environments
Marios Karouzos, Myungshin Im, Jae-Woo Kim +16
Activity at the centers of galaxies, during which the central supermassive black hole is accreting material, is nowadays accepted to be rather ubiquitous and most probably a phase…
The Effective Cross-sections of a Lensing-galaxy: Singular Isothermal Sphere with External Shear
Dong-Wook Lee, Sang-Joon Kim
Numerical studies on the imaging and caustic properties of the singular isothermal sphere (SIS) under a wide range of external shear (from 0.0 to 2.0) are presented. Using a direct…
A PDR model for the FIR mid- CO ladder with universal rotational temperature in star forming region
Seokho Lee, Jeong-Eun Lee, Edwin A. Bergin +1
A photon dominated region (PDR) is one of the leading candidate mechanisms for the origin of the warm CO gas with near universal 300~K rotational temperature inferred from th…
Formation of Warped Disks by Galactic Fly-by Encounters. I. Stellar Disks
Jeonghwan H. Kim, Sebastien Peirani, Sungsoo Kim +3
Warped disks are almost ubiquitous among spiral galaxies. Here we revisit and test the `fly-by scenario' of warp formation, in which impulsive encounters between galaxies are respo…