204 citations · 1.8k across the 67 of their papers we have counts for
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Synthetic Color-Magnitude Diagrams for omega Centauri and Other Massive Globular Clusters with Multiple Populations
Chang H. Ree, Suk-Jin Yoon, Soo-Chang Rey +1
We have constructed synthetic color-magnitude diagrams (CMDs) for omega Cen and other massive globular clusters with apparently peculiar CMD morphology. Our population models, whic…
Omega Centauri as a Disrupted Dwarf Galaxy: Evidence from Multiple Stellar Populations
Young-Wook Lee, Soo-Chang Rey, Chang H. Ree +4
Our recent CCD photometry (Lee et al. 1999) has shown, for the first time, that omega Cen has several distinct stellar populations, which is reminiscent of the Sagittarius dwarf ga…
A New Distance Estimator and Spatial Distribution of GRBS Observed by BATSE
Heon-Young Chang, Suk-Jin Yoon, Chul-Sung Choi
We propose a redshift estimator for the long () gamma-ray bursts (GRBs) observed by the BATSE. It is based on an empirical relation between the redshift and the power-…
CCD Photometry of the Classic Second Parameter Globular Clusters M3 and M13
Soo-Chang Rey, Suk-Jin Yoon, Young-Wook Lee +2
We present high-precision V, B-V color-magnitude diagrams (CMDs) for the classic second parameter globular clusters M3 and M13 from wide-field deep CCD photometry. The data for the…
Horizontal-Branch Morphology as an Age Indicator
Young-Wook Lee, Suk-Jin Yoon, Soo-Chang Rey +1
We present our recent revision of model constructions for the horizontal-branch (HB) morphology of globular clusters, which suggests the HB morphology is more sensitive to age comp…
Age Estimation of Extragalactic Globular Cluster Systems Using H beta Index
Hyun-chul Lee, Suk-Jin Yoon, Young-Wook Lee
After taking into account, for the first time, the detailed systematic variation of horizontal-branch (HB) morphology with age and metallicity, our population synthesis models show…