Buscar
Mostrando ítems 1-10 de 18
Bimodal chemical evolution of the Galactic disk and the Barium abundance of Cepheids
(International Astronomical UnionLijiang, 2013)
In order to understand the Barium abundance distribution in the Galactic disk based on Cepheids, one must first be aware of important effects of the corotation resonance, situated a little beyond the solar orbit. The thin ...
Planetary nebulae near the galactic centre: chemical abundances
(International Astronomical UnionFlorianópolis, 2013)
In this work, we report physical parameters and abundances derived for a sample of high extinction planetary nebulae located in the Galactic bulge, near the Galactic Centre, based on low dispersion spectroscopy secured at ...
Detailed differential chemical analysis of a metal poor star: new evidences about planet formation
(International Astronomical UnionFlorianópolis, 2014)
The present project emphasizes on the study of
metal-poor stars, with and without planets, to investigate
the existence (or not) of a connection between
anomalies in the chemical composition and the
presence of planets ...
Production Of Butanol And Other High Valued Chemicals Using Ethanol As Feedstock Integrated To A First And Second Generation Sugarcane Distillery
(Italian Association of Chemical Engineering - AIDIC, 2014)
Planetary nebulae and determination of the bulge-disk boundary
(International Astronomical UnionBeijing, 2012)
In this paper, a sample of planetary nebulae in the Galaxy's inner-disk and bulge is used to find the galactocentric distance that optimally separates these two populations in terms of their abundances. Statistical distance ...
Planetary nebulae and determination of the bulge-disk boundary
(International Astronomical UnionBeijing, 2012)
In this paper, a sample of planetary nebulae in the Galaxy's inner-disk and bulge is used to find the galactocentric distance that optimally separates these two populations in terms of their abundances. Statistical distance ...
Simulation And Evaluation Of Autonomous And Annexed Sugarcane Distilleries
(Italian Association of Chemical Engineering - AIDIC, 2011)
The star formation rate in the inner Milky Way Galaxy
(International Astronomical UnionBeijing, 2012)
The present star formation rate (SFR) in the inner Galaxy is puzzling for the chemical evolution models (CEM). No static CEM is able to reproduce the peak of the SFR in the 4 kpc ring. The main reason is probably a shortage ...
Evolution models for spiral and irregular galaxies
(International Astronomical UnionFlorianópolis, 2013)
Stars form, die and eject the elements created by stellar nucleosynthesis. Chemical evolution models are the tool used to interpret the elemental abundances in terms of star formation rate and of the gas dilution or ...