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Chemical abundances and kinematics of 257 G-, K-type field giants. Setting a base for further analysis of giant-planet properties orbiting evolved stars
(OXFORD UNIV PRESS, 2015)
We performed a uniform and detailed abundance analysis of 12 refractory elements (Na, Mg, Al, Si, Ca, Ti, Cr, Ni, Co, Sc, Mn, and V) for a sample of 257 G-and K-type evolved stars from the CORALIE planet search programme. ...
The Gaia-ESO Survey: Sodium and aluminium abundances in giants and dwarfs Implications for stellar and Galactic chemical evolution
(EDP SCIENCES S A, 2016)
Context. Stellar evolution models predict that internal mixing should cause some sodium overabundance at the surface of red giants more massive than similar to 1.5-2.0 M-circle dot. The surface aluminium abundance should ...
Stellar activity as a tracer of moving groups
(EDP Sciences, 2013)
We present the results of a study of the stellar activity in the solar neighborhood using complete kinematics (galactocentric velocities
U, V, W) and the chromospheric activity index log R0
HK. We analyzed the average ...
Mapping the Stellar Content of the Milky Way with LSST
(2012)
The Large Synoptic Survey Telescope (LSST) will map half of the sky in six filters down to r=27.5 (AB mag; 5-sigma), with typical precision of one percent (0.01 mag). The ten year baseline of the survey will provide about ...
Pulsating white dwarfs: new insights
(Springer, 2019-09-03)
Stars are extremely important astronomical objects that constitute the pillars on which the Universe is built, and as such, their study has gained increasing interest over the years. White dwarf stars are not the exception. ...
Modeling energy distribution of cool dwarfs in the optical and near-infrared
(Instituto Nacional de Astrofísica, Óptica y Electrónica., 2019)
Estudio de la relación rotación estelar-litio en el cúmulo σ Ori
(Universidad Nacional de ColombiaBogotá - Ciencias - Maestría en Ciencias - AstronomíaObservatorio Astronómico NacionalFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá, 2020)
El fenómeno de la dispersión del litio fotosférico en las estrellas jóvenes de temperaturas super ciales Teff < 5500 K ha sido ampliamente estudiado, sin embargo no se ha establecido una explicación de nitiva. Estudios de ...