0000000000040586

AUTHOR

Alejandra Recio-blanco

showing 3 related works from this author

The Gaia-ESO Survey: The origin and evolution of s-process elements

2018

Context. Several works have found an increase of the abundances of the s-process neutron-capture elements in the youngest Galactic stellar populations. These trends provide important constraints on stellar and Galactic evolution and they need to be confirmed with large and statistically significant samples of stars spanning wide age and distance intervals. Aims. We aim to trace the abundance patterns and the time evolution of five s-process elements - two belonging to the first peak, Y and Zr, and three belonging to the second peak, Ba, La, and Ce - using the Gaia-ESO IDR5 results for open clusters and disc stars. Methods. From the UVES spectra of cluster member stars, we determined the ave…

astro-ph.GAMetallicityFOS: Physical sciencesContext (language use)AstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesGalaxy: diskAstronomi astrofysik och kosmologiAbundance (ecology)QB4600103 physical sciencesAstronomy Astrophysics and CosmologyAstrophysics::Solar and Stellar AstrophysicsDisc010303 astronomy & astrophysicsComputingMilieux_MISCELLANEOUSAstrophysics::Galaxy AstrophysicsPhysicsgeneral [Open clusters and associations][SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]010308 nuclear & particles physicsStar formationAstronomy and AstrophysicsOpen clusters and associations: generalAstrophysics - Astrophysics of GalaxiesStarsAbundances [Galaxy][SDU]Sciences of the Universe [physics]13. Climate actionSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)Galaxy: abundancesAstrophysics::Earth and Planetary AstrophysicsDisk [Galaxy]s-processOpen cluster
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The Gaia-ESO Survey : Probes of the inner disk abundance gradient

2016

The nature of the metallicity gradient inside the solar circle (R_GC < 8 kpc) is poorly understood, but studies of Cepheids and a small sample of open clusters suggest that it steepens in the inner disk. We investigate the metallicity gradient of the inner disk using a sample of inner disk open clusters that is three times larger than has previously been studied in the literature to better characterize the gradient in this part of the disk. We used the Gaia-ESO Survey (GES) [Fe/H] values and stellar parameters for stars in 12 open clusters in the inner disk from GES-UVES data. Cluster mean [Fe/H] values were determined based on a membership analysis for each cluster. Where necessary, dis…

astro-ph.SRField (physics)Cepheid variableRed giantastro-ph.GAMetallicityFOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesGalaxy: diskAstronomi astrofysik och kosmologiAbundance (ecology)0103 physical sciencesCluster (physics)Astrophysics::Solar and Stellar AstrophysicsAstronomy Astrophysics and Cosmology010303 astronomy & astrophysicsQCSolar and Stellar Astrophysics (astro-ph.SR)Astrophysics::Galaxy AstrophysicsQBPhysics010308 nuclear & particles physicsStars: abundancesabundances [Galaxy]Astronomy and AstrophysicsGalaxy: abundances; Galaxy: disk; Galaxy: formation; Stars: abundances; Astronomy and Astrophysics; Space and Planetary ScienceAstrophysics - Astrophysics of GalaxiesGalaxy: abundanceabundances [stars]StarsAstrophysics - Solar and Stellar Astrophysicsformation [Galaxy]Galaxy: formationSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)Galaxy: abundancesAstrophysics::Earth and Planetary Astrophysicsdisk [Galaxy]Open cluster
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The Gaia-ESO survey: Metallicity of the chamaeleon i star-forming region

2014

Context. Recent metallicity determinations in young open clusters and star-forming regions suggest that the latter may be characterized by a slightly lower metallicity than the Sun and older clusters in the solar vicinity. However, these results are based on small statistics and inhomogeneous analyses. The Gaia-ESO Survey is observing and homogeneously analyzing large samples of stars in several young clusters and star-forming regions, hence allowing us to further investigate this issue. Aims. We present a new metallicity determination of the Chamaeleon I star-forming region, based on the products distributed in the first internal release of the Gaia-ESO Survey. Methods. 48 candidate member…

AstrofísicaStars: abundanceMetallicityFOS: Physical sciencesTechniques: spectroscopicContext (language use)AstrophysicsOpen clusters and associations: individual: Chamaeleon ISolar and Stellar Astrophysics (astro-ph.SR)Line (formation)Physics85A04open clusters and associations: individual: Chamaeleon I stars: pre-main sequence stars: abundances techniques: spectroscopicStars: abundancesAstronomy and AstrophysicsSurface gravityAstronomíaStarsAstrophysics - Solar and Stellar AstrophysicsSpace and Planetary ScienceChamaeleonStars: pre-main sequenceOpen clusters and associations: individual: Chamaeleon I; Stars: abundances; Stars: pre-main sequence; Techniques: spectroscopicindividual: Chamaeleon I stars: pre-main sequence stars: abundances techniques: spectroscopic [open clusters and associations]Equivalent widthOpen cluster
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