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On the Origin of Bimodal Horizontal-Branches in Massive Globular Clusters: The Case of NGC 6388 and NGC 6441
Suk-Jin Yoon, Seok-Joo Joo, Chang H. Ree +3
Despite the efforts of the past decade, the origin of the bimodal horizontal-branch (HB) found in some globular clusters (GCs) remains a conundrum. Inspired by the discovery of mul…
A Spectro-photometric Search for Galaxy Clusters in SDSS
Joo H. Yoon, Kevin Schawinski, Yun-Kyeong Sheen +2
Recent large-scale galaxy spectroscopic surveys, such as the Sloan Digital Sky Survey (SDSS), enable us to execute a systematic, relatively-unbiased search for galaxy clusters. Suc…
The Look-back Time Evolution of Far-Ultraviolet Flux from the Brightest Cluster Elliptical Galaxies at z < 0.2
Chang H. Ree, Young-Wook Lee, Sukyoung K. Yi +28
We present the GALEX UV photometry of the elliptical galaxies in Abell clusters at moderate redshifts (z < 0.2) for the study of the look-back time evolution of the UV upturn pheno…