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Last name: ZAGGIA
First name: S.
Astronomy and Astrophysics, 462, pp. 553-563, http://dx.doi.org./10.1051/0004-6361:20065030
Astronomy and Astrophysics, 466, pp. 541-541, http://dx.doi.org./10.1051/0004-6361:20065030e
Astronomy and Astrophysics, 462, pp. 553-563, http://dx.doi.org./10.1051/0004-6361:20065030
Astronomy and Astrophysics, 456, pp. 881-893, http://dx.doi.org./10.1051/0004-6361:5019
International audience
International audience
Astronomy and Astrophysics, 452, pp. 119-129, http://dx.doi.org./10.1051/0004-6361:20054528
Context: The discovery and chemical analysis of extremely metal-poor stars permit a better understanding of the star formation of the first generation of stars and of the Universe emerging from the Big Bang. aims: We report the study of a primordial star situated in the centre of the constellation Leo (SDSS J102915+172027). method: The star,...
Astronomy and Astrophysics, 449, pp. 837-854, http://dx.doi.org./10.1051/0004-6361:20053785
We take advantage of the Gaia-ESO Survey iDR4 bulge data to search for abundance anomalies that could shed light on the composite nature of the Milky Way bulge. The α-element (Mg, Si, and whenever available, Ca) abundances, and their trends with Fe abundances have been analysed for a total of 776 bulge stars. In addition, the aluminum...
International audience
Context. Large spectroscopic surveys have in recent years enabled computing three-dimensional interstellar extinction maps thanks to the accurate stellar atmospheric parameters and line-of-sight distances these surveys provide. Interstellar extinction maps are complementary to 3D maps extracted from photometry and allow a more thorough studying...
International audience
Aims: We present the first extensive spectroscopic study of the global population in star clusters Trumpler 16, Trumpler 14, and Collinder 232 in the Carina nebula, using data from the Gaia-ESO Survey, down to solar-mass stars. Methods: In addition to the standard homogeneous survey data reduction, a special processing was applied here because...
International audience
Astronomische Nachrichten, 326, pp. 432-464, http://dx.doi.org./10.1002/asna.10396
We present the abundance analysis for a sample of 7 red giant branch stars in the metal-poor globular cluster NGC 4372 based on UVES spectra acquired as part of the Gaia-ESO Survey. This is the first extensive study of this cluster from high-resolution spectroscopy. We derive abundances of O, Na, Mg, Al, Si, Ca, Sc, Ti, Fe, Cr, Ni, Y, Ba, and...
International audience