SIMBAD references

2012ApJ...747L...8R - Astrophys. J., 747, L8 (2012/March-1)

Detection of the second r-process peak element tellurium in metal-poor stars.

ROEDERER I.U., LAWLER J.E., COWAN J.J., BEERS T.C., FREBEL A., IVANS I.I., SCHATZ H., SOBECK J.S. and SNEDEN C.

Abstract (from CDS):

Using near-ultraviolet spectra obtained with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope, we detect neutral tellurium in three metal-poor stars enriched by products of r-process nucleosynthesis, BD +17 3248, HD 108317, and HD 128279. Tellurium (Te, Z = 52) is found at the second r-process peak (A ~ 130) associated with the N = 82 neutron shell closure, and it has not been detected previously in Galactic halo stars. The derived tellurium abundances match the scaled solar system r-process distribution within the uncertainties, confirming the predicted second peak r-process residuals. These results suggest that tellurium is predominantly produced in the main component of the r-process, along with the rare earth elements.

Abstract Copyright: ∼

Journal keyword(s): nuclear reactions, nucleosynthesis, abundances - stars: abundances - stars: individual (BD +17 3248, HD 108317, HD 128279) - stars: Population II

Simbad objects: 8

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2012ApJ...747L...8R and select 'bookmark this link' or equivalent in the popup menu