Advanced search
Start date
Betweenand
(Reference retrieved automatically from Google Scholar through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The Hamburg/ESO R-process enhanced star survey (HERES). I. Project description and the discovery of two stars with strong enhancement of neutro-capture elements

Full text
Author(s):
Show less -
Christlieb, N. ; Beers, T. C. ; Barklem, P. S. ; Bessell, M. S. ; Hill, V. ; Holmberg, J. ; Korn, A. ; Marsteller, B. ; Mashonkina, L. ; Zickgraf, F. J. ; et al.
Total Authors: 11
Document type: Journal article
Source: Astronomy & Astrophysics; v. 428, n. 3, p. 1027-1037, 2004.
Field of knowledge: Physical Sciences and Mathematics - Astronomy
Abstract

We report on a dedicated effort to identify and study metal-poor stars that are strongly enhanced in r-process elements ([r/Fe] > +1.0 dex; hereafter r-II stars), the Hamburg/ ESO R-process enhanced star survey (HERES). In this paper we describe a pilot study based on a set of 35 stars, including 23 from HK survey, eight from HES, and four comparison stars. We discovered two new r-II stars, CS 29497-004 ([Eu/Fe]=1.64+/-0.22) and CS 29491-069 ([Eu/Fe]=1.08+/-0.23). (AU)

FAPESP's process: 00/10406-4 - Chemical evolution and stellar populations of the galaxy, magellanic clouds and elliptical galaxies, based on spectroscopy and imaging
Grantee:Beatriz Leonor Silveira Barbuy
Support type: Research Projects - Thematic Grants