113 citations · 460 across the 13 of their papers we have counts for
15 papers
Economic Power, Population, and the Size of Astronomical Community
Sang-Hyeon Ahn
The number of astronomers for a country registered to the IAU is known to have a correlation with the GDP. However, the robustness of this relationship can be doubted, because the…
Rotational Disruption of Dust Grains by Radiative Torques in Strong Radiation Fields
Thiem Hoang, Le Ngoc Tram, Hyeseung Lee +1
Massive stars, supernovae, and kilonovae are among the most luminous radiation sources in the universe. Observations usually show near- to mid-infrared (NIR--MIR, m) e…
Broad Wings around H and H in the Two S-Type Symbiotic Stars Z Andromedae and AG Draconis
Seok-Jun Chang, Hee-Won Lee, Ho-Gyu Lee +3
Symbiotic stars often exhibit broad wings around Balmer emission lines, whose origin is still controversial. We present the high resolution spectra of the S type symbiotic stars Z…
Escape of Resonantly Scattered Ly and H from Hot and Optically Thick Media
Seok-Jun Chang, Hee-Won Lee, Sang-Hyeon Ahn +4
We investigate the escape of Ly from emission nebulae with a significant population of excited hydrogen atoms in the level , rendering them optically thick in H. The tra…
Proto-type installation of a double-station system for the optical-video-detection and orbital characterisation of a meteor/fireball in South Korea
Tobias Cornelius Hinse, Woo-Kyum Kim, Sang-Hyeon Ahn +5
We give a detailed description of the installation and operation of a double-station meteor detection system which formed part of a research & education project between Korea Astro…
Singly-Peaked P-Cygni type Ly from starburst galaxies
Sang-Hyeon Ahn
We present results of Monte Carlo calculations for the Lya line transfer in an expanding dusty supershell, where Lya source is a well-localized star cluster in a starburst galaxy.T…