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Kinematic and Chemical Constraints on the Formation of M31’s Inner and Outer Halo

  • Authors: Andreas Koch, R. Michael Rich, David B. Reitzel, Nicolas F. Martin, Rodrigo A. Ibata, Scott C. Chapman, Steven R. Majewski, Masao Mori, Yeong-Shang Loh, James C. Ostheimer, and Mikito Tanaka

Koch et al. 2008 The Astrophysical Journal 689 958.

  • Provider: AAS Journals

Caption: Fig. 9.

Spectroscopic vs. photometric metallicities for dwarf (crosses) and giant (points) candidates. Shown each are mean and 1 σ scatter. The dwarf stars clearly deviate from unity (solid line). Data were binned by 0.25 dex, except for the most metal‐poor and metal‐rich bin, in which we chose to include 20 stars for better sampling.

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