Aplicando modelos de granos de polvo con propiedades meteoriticas al continuo ionizante de algunos Nucleos Activos de Galaxias

TL;DR

This study develops extinction curves based on Mie's theory for spherical dust grains with meteorite-like compositions and size distributions, successfully modeling the UV spectral features of active galactic nuclei.

Contribution

It introduces a novel application of Mie theory to meteorite-composed dust grains for modeling the UV spectra of galactic nuclei.

Findings

Successfully fit 11 quasar spectra using the new extinction curves.

Reproduced UV spectral breaks and smoothness in the ionizing continuum.

Demonstrated the relevance of meteorite-like dust in astrophysical extinction modeling.

Abstract

We construct extinction curves based on Mie's theory for spherical dust grain with size distributions between 50-2500 A and composed by elements found in meteorites. We explore the issue of whether the observed spectral energy distribution might be dust absorbed in the far and near-UV by this kind of dust grains. Using this approach, satisfactory fits to the 11 spectra can be obtained. ----- En este trabajo, presentamos las diversas curvas de extincion que hemos calculado con base a la teoria Mie para granos de polvo esfericos, con distribuciones de acuerdo a su tamano (entre 50-2500 A) y con diversos compuestos quimicos hallados en meteoritos. Bajo el posible paradigma que hemos desarrollado, estas curvas de extincion al ser aplicadas a un continuo ionizante teorico y comparadas con 11 espectros observados de quasares, hemos encontrado de manera exitosa reproducir tanto el quiebre UV asi como el problema de suavidad presentes en el continuo ionizante de algunos Nucleos Activos de Galaxias.