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The Next Generation Fornax Survey (NGFS). IV. Mass and Age Bimodality of Nuclear Clusters in the Fornax Core Region

  • Authors: Yasna Ordenes-Briceño, Thomas H. Puzia, Paul Eigenthaler, Matthew A. Taylor, Roberto P. Muñoz, Hongxin Zhang, Karla Alamo-Martínez, Karen X. Ribbeck, Eva K. Grebel, Simón Ángel, Patrick Côté, Laura Ferrarese, Michael Hilker, Ariane Lançon, Steffen Mieske, Bryan W. Miller, Yu Rong, and Ruben Sánchez-Janssen

2018 The Astrophysical Journal 860 4.

  • Provider: AAS Journals

Caption: Figure 6.

Color–color diagrams, (u′ − g′)0 vs. (g′ − i′)0 (top panel) and (u′ − i′)0 vs. (i′ − Ks)0 (bottom panel), showing as gray dots all of the NGFS central sources in the R < Rvir/4 with PSF photometry. The red solid circles represent the nuclei of this work, and the blue diamonds show the confirmed CSSs in the surroundings of the cD galaxy NGC 1399. Compact stellar systems such as GCs, UCDs, and nuclei lie in a very narrow region in color–color space, which makes the ugi′ and uiKs diagrams very powerful tools to select CSS candidates.

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