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The Heavy Metal Survey: The Evolution of Stellar Metallicities, Abundance Ratios, and Ages of Massive Quiescent Galaxies since z ∼ 2

  • Authors: Aliza G. Beverage, Mariska Kriek, Katherine A. Suess, Charlie Conroy, Sedona H. Price, Guillermo Barro, Rachel Bezanson, Marijn Franx, Brian Lorenz, Yilun Ma, Lamiya A. Mowla, Imad Pasha, Pieter van Dokkum, Daniel R. Weisz

Aliza G. Beverage et al 2024 The Astrophysical Journal 966 .

  • Provider: AAS Journals

Caption: Figure 8.

Lick/IDS indices Mgb and < Fe > for 10 primary z ∼ 1.4 (blue triangles) and z ∼ 2.1 (green stars) Heavy Metal targets. A grid of models from the Thomas et al. (2003) stellar population model (t age = 2 Gyr) is superimposed in gray. The Heavy Metal galaxies tend toward low metallicities and high [Mg/Fe], in general agreement with what is found from the full-spectrum fitting. Uncertainties are large, motivating the need for full-spectrum modeling.

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