Buscar
Mostrando ítems 11-20 de 415
ARIADNE: measuring accurate and precise stellar parameters through SED fitting
(Oxford, 2022)
Accurately measuring stellar parameters is a key goal to increase our understanding of
the observable universe. However, current methods are limited by many factors, in particular,
the biases and physical assumptions ...
Improving the Ni I atomic model for solar and stellar atmospheric models
(IOP Publishing, 2013-05-10)
Neutral nickel (Ni I) is abundant in the solar atmosphere and is one of the important elements that contribute to the emission and absorption of radiation in the spectral range between 1900 and 3900 Å. Previously, the Solar ...
Helium diffusion in magnetic stellar atmospheres of early B-type stars.
(EDP Sciences, 2021-06)
Context. The treatment of diffusion in stellar atmospheres of chemically peculiar stars is complex and difficult to model and has been treated mainly in A-type and late B-type stars. Vertical stratification is very often ...
Propiedades físicas de estrellas con exoplanetas y anillos circunestelares /
(2008-03)
Estudiamos diferentes aspectos de estrellas con exoplanetas (EH) y de estrellas de tipo Vega. Detectamos excesos IR en 20% de las estrellas EH, el cual se atribuye a la presencia de polvo circunestelar.
A Grid of Synthetic Spectra for Hot DA White Dwarfs and Its Application in Stellar Population Synthesis
(Iop Publishing Ltd, 2017)
In this work we present a grid of LTE and non-LTE synthetic spectra of hot DA white dwarfs (WDs). In addition to its usefulness for the determination of fundamental stellar parameters of isolated WDs and in binaries, this ...
A new library of theoretical stellar spectra with scaled-solar and α-enhanced mixtures
(Oxford University PressOxford, 2014)
Theoretical stellar libraries have been increasingly used to overcome limitations of empirical
libraries, e.g. by exploring atmospheric parameter spaces not well represented in the
latter. This work presents a new ...
Finite Rank Approximation based method for solving the RTE in stellar atmospheres and application to an inverse problem
(2006)
The Finite Rank Approximation (FRA) based method is well known in op- erator approximation theory but it is also useful for suggesting numerical methods for solving integral equations. In this document we describe two FRA ...