A 3D view of the Hydra I cluster core - II. Stellar populations

Carlos Eduardo Barbosa; Cl\'audia Mendes de Oliveira; Lodovico Coccato; Magda Arnaboldi; Michael Hilker; Tom Richtler

arxiv: 1410.0696 · v1 · pith:FXNLAU3Jnew · submitted 2014-10-02 · 🌌 astro-ph.GA

A 3D view of the Hydra I cluster core - II. Stellar populations

Carlos Eduardo Barbosa , Magda Arnaboldi , Michael Hilker , Lodovico Coccato , Tom Richtler , Cl\'audia Mendes de Oliveira This is my paper

classification 🌌 astro-ph.GA

keywords clusterpopulationsstellarcoregalaxyhydraablealpha

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Several observations of the central region of the Hydra I galaxy cluster point to a multi-epoch assembly history. Using our novel FORS2/VLT spectroscopic data set, we were able to map the luminosity-weighted age, [Fe/H] and [$\alpha$/Fe] distributions for the stellar populations around the cD galaxy NGC 3311. Our results indicate that the stellar populations follow the trends of the photometric substructures, with distinct properties that may aid to constrain the evolutionary scenarios for the formation of the cluster core.

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A 3D view of the Hydra I cluster core - II. Stellar populations

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