0000000001318114

AUTHOR

J. Lopez-santiago

showing 3 related works from this author

The Gaia-ESO Survey: Extracting diffuse interstellar bands from cool star spectra DIB-based interstellar medium line-of-sight structures at the kpc s…

2014

We study how diffuse interstellar bands (DIBs) measured toward distance-distributed target stars can be used to locate dense interstellar (IS) clouds in the Galaxy and probe a line-of-sight (LOS) kinematical structure, a potential useful tool when gaseous absorption lines are saturated or not available in the spectral range. Cool target stars are numerous enough for this purpose. We have devised automated DIB fitting methods appropriate to cool star spectra and multiple IS components. The data is fitted with a combination of a synthetic stellar spectrum, a synthetic telluric transmission, and empirical DIB profiles. In parallel, stellar distances and extinctions are estimated self-consisten…

Milky WayFOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesSpectral line0103 physical sciencesAstronomy Astrophysics and CosmologyISM: general; dust extinction; ISM: lines and bandsEmission spectrum010303 astronomy & astrophysicsGalaxy: generalgeneral [Galaxy]Dust extinctionAstrophysics::Galaxy AstrophysicsISM: generalPhysicsLine-of-sightSpiral galaxygeneral [ISM]010308 nuclear & particles physicsextinctionAstronomy and AstrophysicsAstronomy and AstrophysicISM: lines and bandAstrophysics - Astrophysics of GalaxiesGalaxyISM: lines and bandsAstronomíaInterstellar mediumStars13. Climate actionSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)lines and bands [ISM]dust
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The Gaia-ESO Survey: Structural and dynamical properties of the young cluster Chamaeleon i

2017

Investigating the physical mechanisms driving the dynamical evolution of young star clusters is fundamental to our understanding of the star formation process and the properties of the Galactic field stars. The young (~2 Myr) and partially embedded cluster Chamaeleon I is one of the closest laboratories for the study of the early stages of star cluster dynamics in a low-density environment. The aim of this work is to study the structural and kinematical properties of this cluster combining parameters from the high-resolution spectroscopic observations of the Gaia-ESO Survey with data from the literature. Our main result is the evidence of a large discrepancy between the velocity dispersion …

astro-ph.SRStellar populationopen clustersand associations: individual: Chamaeleon IIndividual: Chamaeleon I [Open clusters and associations]Open clusters and associations: Individual: Chamaeleon I; Stars: Kinematics and dynamics; Stars: Pre-main sequence; Techniques: Spectroscopicastro-ph.GAstars: kinematics and dynamicsFOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysicsstars: pre-main sequence01 natural sciencesVirial theoremKinematics and dynamics [Stars]Stars: Kinematics and dynamic0103 physical sciencesCluster (physics)Mass segregationAstrophysics::Solar and Stellar Astrophysics010303 astronomy & astrophysicsStellar evolutionQCSolar and Stellar Astrophysics (astro-ph.SR)Astrophysics::Galaxy AstrophysicsQBPhysicsPre-main sequence [Stars]open clusters and associations: individual: Chamaeleon I010308 nuclear & particles physicsVelocity dispersionAstronomy and AstrophysicsAstrophysics - Astrophysics of Galaxies[SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]stars: kinematics and dynamics; stars: pre-main sequence; open clustersand associations: individual: Chamaeleon I; techniques: spectroscopicStar clusterAstrophysics - Solar and Stellar AstrophysicsSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)Astrophysics::Earth and Planetary AstrophysicsSpectroscopic [Techniques]Equivalent widthtechniques: spectroscopicQB799
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Gaia-ESO Survey: Cha I members

2017

Investigating the physical mechanisms driving the dynamical evolution of young star clusters is fundamental to our understanding of the star formation process and the properties of the Galactic field stars. The young (~2Myr) and partially embedded cluster Chamaeleon I is one of the closest laboratories to study the early stages of star cluster dynamics in a low-density environment. The aim of this work is to study the structural and kinematical properties of this cluster combining parameters from the high-resolution spectroscopic observations of the Gaia-ESO Survey with data from the literature. Our main result is the evidence of a large discrepancy between the velocity dispersion ({sigma}_…

observational astronomyOpen star clustersEffective temperatureAstrophysics and AstronomyRadial velocityExoplanet AstronomyStellar AstronomyPhysicsAstrophysics::Solar and Stellar AstrophysicsStellar massesAstrophysics::Cosmology and Extragalactic AstrophysicsNatural SciencesAstrophysics::Galaxy Astrophysics
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