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The VIRUS-dE Survey. I. Stars in Dwarf Elliptical Galaxies—3D Dynamics and Radially Resolved Stellar Initial Mass Functions

  • Authors: Mathias Lipka, Jens Thomas, Roberto Saglia, Ralf Bender, Maximilian Fabricius, Gary J. Hill, Matthias Kluge, Martin Landriau, Ximena Mazzalay, Eva Noyola, Taniya Parikh, Jan Snigula

Mathias Lipka et al 2024 The Astrophysical Journal 976 .

  • Provider: AAS Journals

Caption: Figure 21.

The abundance ratio [Mg/Fe] (a proxy for extended star formation) vs. the single-population age. Especially in their center (r = 2.″5), dEs that are young also have lower solar-like [Mg/Fe], which suggests they had a more extended star formation history (SFH) than older ones that (presumably) were quenched earlier.

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