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Two distinct red giant branch populations in the globular cluster NGC 2419 as tracers of a merger event in the Milky Way
Young-Wook Lee, Sang-Il Han, Seok-Joo Joo +7
Recent spectroscopic observations of the outer halo globular cluster (GC) NGC 2419 show that it is unique among GCs, in terms of chemical abundance patterns, and some suggest that…
Density distributions of outflow driven turbulence
Anthony Moraghan, Jongsoo Kim, Suk-Jin Yoon
Protostellar jets and outflows are signatures of star formation and promising mechanisms for driving supersonic turbulence in molecular clouds. We quantify outflow-driven turbulenc…
The effect of second generation populations on the integrated colors of metal-rich globular clusters in early-type galaxies
Chul Chung, Sang-Yoon Lee, Suk-Jin Yoon +1
The mean color of globular clusters (GCs) in early-type galaxies is in general bluer than the integrated color of halo field stars in host galaxies. Metal-rich GCs often appear mor…
Nonlinear Color-Metallicity Relations of Globular Clusters. V. Nonlinear Absorption-line Index versus Metallicity Relations and Bimodal Index Distributions of M31 Globular Clusters
Sooyoung Kim, Suk-Jin Yoon, Chul Chung +5
Recent spectroscopy on the globular cluster (GC) system of M31 with unprecedented precision witnessed a clear bimodality in absorption-line index distributions of old GCs. Such div…
Nonlinear Color-Metallicity Relations of Globular Clusters. IV. Testing the Nonlinearity Scenario for Color Bimodality via HST/WFC3 u-band Photometry of M84 (NGC 4374)
Suk-Jin Yoon, Sangmo T. Sohn, Hak-Sub Kim +4
Color distributions of globular clusters (GCs) in most massive galaxies are bimodal. Assuming linear color-to-metallicity conversions, bimodality is viewed as the presence of merel…
Wide-Field Multiband Photometry of Globular Cluster Systems in the Fornax Galaxy Cluster
Hak-Sub Kim, Suk-Jin Yoon, Sangmo Tony Sohn +5
We present wide-field multiband photometry of globular cluster (GC) systems in NGC 1399, NGC 1404, and NGC 1387 located at the central region of the Fornax galaxy cluster. Observat…