HST-STIS abundances in the uranium-rich very metal-poor star CS 31082-001

Creators: Barbuy, Beatriz; Spite, Monique; Hill, Vanessa; Primas, Francesca; Plez, Bertrand; Cayrel, Roger; Sneden, Christopher; Spite, François; Beers, Timothy C.; Andersen, Johannes; Nordström, Birgitta; Bonifacio, Piercarlo; François, Patrick; Molaro, Paolo; Siqueira-Mello, C.

Others:: Universidade de São Paulo; Observatoire de Paris ; Université Paris sciences et lettres (PSL); Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA); European Southern Observatory, Germany; Université de Montpellier (UM); University of Texas, Austin; Michigan State University; Niels Bohr Institute; INAF-Osservatorio Astronomico di Trieste (INAF-OATs); Cunha; Katia; Spite; Monique; Barbuy; Beatriz

Description

The abundance derivation of heavy r-elements may provide a better understanding of the r-process, and the determination of several reference r-elements should allow a better determination of the star's age. The spatial ultraviolet (UV) region presents a large number of lines of heavy elements, and in some cases such as Bi, Pt, Au, detectable lines are only available in the UV. The extreme ``r-process star'' CS 31082-001 ([Fe/H] = -2.9) was observed in the spatial UV in order to determine abundances of the heavy elements, using STIS on board HST.

Abstract

International audience

HST-STIS abundances in the uranium-rich very metal-poor star CS 31082-001

Description

Abstract

Additional details