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Last name: PRIMAS
First name: Francesca
Astronomy and Astrophysics, 480, pp. 379-395, http://dx.doi.org./10.1051/0004-6361:20064854
The UltraViolet-Visual Echelle Spectrograph (UVES) was first offered to the ESO community in 2000. A workhorse covering a vast range of topics from Solar System objects to cosmology, it quickly became one of the most productive instruments at Paranal. For the 20th anniversary of UVES's entering into service, over 100 astronomers from across the...
International audience
We present the high-resolution spectroscopic analysis of two new extremely metal-poor stars (EMPS) candidates in the dwarf spheroidal galaxy Sextans. These targets were pre-selected from medium resolution spectra centered around the Ca II triplet in the near-infrared and followed-up at higher resolution with VLT/UVES. We confirm their low...
International audience
International audience
International audience
Astronomy and Astrophysics, 501, pp. 519-530 (2009)
International audience
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...
International audience
International audience
As a brief revision, the origin of heavy elements and the role of abundances in extremely metal-poor (EMP) stars are presented. Heavy element abundances in the EMP uranium-rich star CS 31082-001 based mainly on near-UV spectra from STIS/HST are presented. These results should be useful for a better characterisation of the neutron exposure(s)...
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We present new homogeneous measurements of Na, Al, and three alpha-elements (Mg, Si, Ca) for 75 Galactic Cepheids. The abundances are based on high spectral resolution (R~ 38 000) and high signal-to-noise ratio (S/N ~ 50-300) spectra collected with UVES at ESO VLT. The current measurements were complemented with Cepheid abundances provided by...
International audience