2.5k citations · 14.8k across the 134 of their papers we have counts for
134 papers
Evidence for strong progenitor age dependence of type Ia supernova luminosity standardization process
Young-Wook Lee, Chul Chung, Pierre Demarque +3
Supernova (SN) cosmology is based on the assumption that the width-luminosity relation (WLR) and the color-luminosity relation (CLR) in the type Ia SN luminosity standardization wo…
New sub-grouping of multiple stellar populations in NGC 2808 based on low-resolution spectroscopy
Seungsoo Hong, Dongwook Lim, Chul Chung +3
We performed low-resolution spectroscopy for the red giant branch stars in an intriguing globular cluster (GC) NGC 2808, which hosts subpopulations with extreme helium and light-el…
Difference in chemical composition between the bright and faint red clump stars in the Milky Way bulge
Dongwook Lim, Young-Wook Lee, Andreas Koch +7
The double red clump (RC) observed in color-magnitude diagrams of the Milky Way bulge is at the heart of the current debate on the structure and formation origin of the bulge. This…
Space Missions for Astronomy and Astrophysics in Korea: Past, Present, and Future
Kwang-il Seon, Wonyong Han, Young-Wook Lee +8
We review the history of space mission in Korea focusing on the field of astronomy and astrophysics. For each mission, scientific motivation and achievement are reviewed together w…
Further evidence for significant luminosity evolution in supernova cosmology
Young-Wook Lee, Chul Chung, Yijung Kang +1
Supernova (SN) cosmology is based on the assumption that the corrected luminosity of SN Ia would not evolve with redshift. Recently, our age dating of stellar populations in early-…
Yonsei Evolutionary Population Synthesis (YEPS) Model. III. Surface Brightness Fluctuation of Normal and Helium-enhanced Simple Stellar Populations
Chul Chung, Suk-Jin Yoon, Hyejeon Cho +2
We present an evolutionary population synthesis model of the surface brightness fluctuation (SBF) for normal and He-enriched simple stellar populations (SSPs). While our SBF model…