7 papers
Radiative transfer problem in dusty galaxies: iteration scaling approximation
D. Semionov, V. Vansevicius
We investigate the applicability and accuracy of the iteration scaling approximation, proposed by Kylafis and Bahcall (1987). It is shown, that while this method provides results s…
Radiative transfer problem in dusty galaxies: effects of non-isotropic multiple scattering
D. Semionov, V. Vansevicius
We investigate the effects of multiple anisotropic light scattering by interstellar dust particles on photometric profiles of disk galaxy models computed using an iterative ray-tra…
Theoretical modelling of late-type giant atmospheres: preparing for Gaia
A. Kucinskas, I. Brott, P. H. Hauschildt +4
Late type giants (RGB/AGB stars) will be important tracers of the Galactic morphology and evolution in the framework of Gaia, as they are intrinsically bright and thus can probe di…
Radiative transfer problem in dusty galaxies: ray-tracing approach
D. Semionov, V. Vansevicius
A new code for evaluation of light absorption and scattering by interstellar dust grains is presented. The radiative transfer problem is solved using ray-tracing algorithm in a sel…
GAIA Photometric Performances
Vladas Vansevicius, Audrius Bridzius
GAIA present day (end-2002) photometric performances, estimated basing on the stellar populations crucial for understanding the formation and evolution of the Galaxy, are discussed…
AGB Stars as Tracers of Star Formation Histories: Implications for GAIA Photometry and Spectroscopy
A. Kucinskas, L. Lindegren, T. Tanabe +1
We argue that tracing star formation histories with ESA's space mission GAIA using main sequence turn-off (MSTO) point dating will mainly be effective in cases of mild interstellar…