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Near‐Ultraviolet Observations of HD 221170: New Insights into the Nature of r‐Process–rich Stars

  • Authors: Inese I. Ivans, Jennifer Simmerer, Christopher Sneden, James E. Lawler, John J. Cowan, Roberto Gallino, and Sara Bisterzo

Ivans et al. 2006 The Astrophysical Journal 645 613.

  • Provider: AAS Journals

Caption: Fig. 11.

Comparison of the ﹩\mathrm{log}\,\epsilon ( \mathrm{X}\,) ﹩ abundances of ﹩Z> 30﹩ in HD 221170 with those of CS 22892−052 (blue crosses; Sneden et al. 2003, including upper limits for Ga, Ge, Sn, and U), HD 115444 (green triangles; Westin et al. 2000), BD +17 3248 (red pentagons; Cowan et al. 2002), and the predicted scaled solar r‐process pattern (dotted line; Simmerer et al. 2004). Both the derived and predicted abundances have been normalized to the value derived for ﹩\mathrm{log}\,\epsilon ( \mathrm{Eu}\,) ﹩ in HD 221170. To lessen confusion, upper limits are indicated only for HD 221170. The bottom panel displays the difference defined as ﹩\Delta \mathrm{log}\,\epsilon ( \mathrm{X}\,) \equiv \mathrm{log}\,\epsilon ( \mathrm{X}\,) _{\mathrm{obs}\,}-\mathrm{log}\,\epsilon ( \mathrm{X}\,) _{\mathrm{pred}\,}﹩ for all four r‐process–rich stars with respect to the scaled solar r‐process predictions of Simmerer et al. (2004).

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