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Evidence for two spatially separated UV continuum emitting regions in the Cloverleaf broad absorption line quasar
(EDP Sciences, 2015-10)
Testing the standard Shakura-Sunyaev model of accretion is a challenging task because the central region of quasars where accretion takes place is unresolved with telescopes. The analysis of microlensing in gravitationally ...
Elements of a gravitational lens system assuming an elliptical galaxy modelElementos de un sistema de lentes gravitacionales que asumen un modelo de galaxia elíptica
(Revista Mexicana de Astronomia y Astrofisica, 2019)
Efecto de lente gravitacional unificado: una aproximación a la reconstrucción del perfil de masa de un cúmulo galáctico
(Bogotá - Ciencias - Maestría en Ciencias - AstronomíaUniversidad Nacional de Colombia - Sede Bogotá, 2020-10-28)
In this work, we present the description, implementation, and application of a free-form reconstruction method that makes use of the gravitational lensing effect to produce an estimation of the mass profile of a galaxy ...
Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars III. Detection of lithium in the metal-poor bulge dwarf MOA-2010-BLG-285S
(EDP SCIENCES S A, 2010)
Context. To study the evolution of Li in the Galaxy it is necessary to observe dwarf or subgiant stars. These are the only long-lived stars whose present-day atmospheric chemical composition reflects their natal Li abundances ...