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Article 2018-04

TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars

Autor: Bonifacio, P. Caffau, E. Spite, M. Spite, F. Sbordone, L. Monaco, L. François, P. Plez, B. Molaro, P. Gallagher, A.J. Cayrel, R. Christlieb, N. Klessen, R.S. Koch, A. Ludwig, H.-G. Steffen, M. Zaggia, S. Abate, C.

Context. Extremely metal-poor (EMP) stars provide us with indirect information on the first generations of massive stars. The TOPoS survey has been designed to increase the census of these stars and to provide a chemical inventory that is as detailed as possible. Aims. Seven of the most iron-poor...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/8895

Repositorio Universidad Andrés Bello

Cosmology: observations

Galaxy: abundances

Galaxy: formation

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Bonifacio, P. , Caffau, E. , Spite, M. , Spite, F. , Sbordone, L. , Monaco, L. , François, P. , Plez, B. , Molaro, P. , Gallagher, A.J. , Cayrel, R. , Christlieb, N. , Klessen, R.S. , Koch, A. , Ludwig, H.-G. , Steffen, M. , Zaggia, S. , Abate, C. , [TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars] , TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars

Article 2018-03

Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy

Autor: Hansen, C.J. El-Souri, M. Monaco, L. Villanova, S. Bonifacio, P. Caffau, E. Sbordone, L.

Sagittarius (Sgr) is a massive disrupted dwarf spheroidal galaxy in the Milky Way halo that has undergone several stripping events. Previous chemical studies were restricted mainly to a few, metal-rich ([Fe/H] ) stars that suggested a top-light initial mass function (IMF). Here we present the fir...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/7050

Repositorio Universidad Andrés Bello

Galaxies: dwarf

Galaxies: evolution

Galaxy: halo

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Hansen, C.J. , El-Souri, M. , Monaco, L. , Villanova, S. , Bonifacio, P. , Caffau, E. , Sbordone, L. , [Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy] , Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy

Article 2016-04

Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies

Autor: François, P. Monaco, L. Bonifacio, P. Moni Bidin, C. Geisler, D.

Context. Low-mass dwarf spheroidal galaxies are key objects for our understanding of the chemical evolution of the pristine Universe and the Local Group of galaxies. Abundance ratios in stars of these objects can be used to better understand their star formation and chemical evolution. Aims. We r...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/3983

Repositorio Universidad Andrés Bello

Galaxies: abundances

Local Group

Stars: abundances

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François, P. , Monaco, L. , Bonifacio, P. , Moni Bidin, C. , Geisler, D. , [Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies] , Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies

Article 2018-06

Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS

Autor: Caffau, E. Gallagher, A.J. Bonifacio, P. Spite, M. Duffau, S. Spite, F. Monaco, L. Sbordone, L.

Aims. Carbon-enhanced metal-poor (CEMP) stars represent a sizeable fraction of all known metal-poor stars in the Galaxy. Their formation and composition remains a significant topic of investigation within the stellar astrophysics community. Methods. We analysed a sample of low-resolution spectra ...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/9238

Repositorio Universidad Andrés Bello

Galaxy: abundances

Galaxy: formation

Galaxy: halo

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Caffau, E. , Gallagher, A.J. , Bonifacio, P. , Spite, M. , Duffau, S. , Spite, F. , Monaco, L. , Sbordone, L. , [Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS] , Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS

Article 2017-07

Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius

Autor: Mucciarelli, A. Monaco, L. Bonifacio, P. Saviane, I.

We observed six He-clump stars of the intermediate-Age stellar cluster Gaia1 with the MIKE/Magellan spectrograph. A possible extra-galactic origin of this cluster, recently discovered thanks to the first data release of the ESA Gaia mission, has been suggested, based on its orbital parameters. Ab...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/5034

Repositorio Universidad Andrés Bello

Open clusters and associations: individual: Gaia1

Stars: abundances

Techniques: spectroscopic

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Mucciarelli, A. , Monaco, L. , Bonifacio, P. , Saviane, I. , [Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius] , Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius

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Resultados de búsqueda

TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars

Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy

Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies

Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS

Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius

Descubre y comparte nuestro conocimiento público

Resultados de búsqueda

TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars

[Bonifacio_TOPoS_IV.pdf]

Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy

[Hansen_Ages_and_Heavy_Element.pdf]

Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies

[Francois_P_Abundance_ratios_of_red_giants.pdf]

Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS

[Caffau_Investigation_of_a_sample.pdf]

Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius

[Mucciarelli_Chemical_composition.pdf]