Image Details

Choose export citation format:

The Origin and Evolution of Metallicity Gradients: Probing the Mode of Mass Assembly at z ≃ 2

  • Authors: Tucker Jones, Richard S. Ellis, Johan Richard, and Eric Jullo

Jones et al. 2013 The Astrophysical Journal 765 48.

  • Provider: AAS Journals

Caption: Figure 7.

Metallicity gradients for each galaxy in our sample based on the use of various strong-line diagnostics. N2, O3N2, and O3HB are as presented in Figure 5, and we use the calibrations of Pettini & Pagel (2004; PP04) and Maiolino et al. (2008; M+08). The solid lines show the gradient from Figure 6 and dotted lines are the best fits to the other diagnostics. For J0744 and J1206, we estimate Hβ from Hα with the global Hα/Hβ ratio. In nearly all cases the gradients are approximately equal to or stronger than the adopted value (N2, PP04). The exceptions are the [O iii]-based results for J0744 which suggest a flat or inverted gradient, although all slopes are within 2σ of the adopted value.

Other Images in This Article

Show More

Copyright and Terms & Conditions