I Workshop on

Astrophysical Spectroscopy

August 26 - 30, 2011, Orašac, Serbia







Spectroscopy is a power tool for the analysis of radiation from different plasmas in astronomy, laboratory, fusion research and industry. The investigation of nature of the emitting ionized gas in galactic nuclei is one of important subjects in astrophysics today. Investigating the processes in the central parts of these objects, we can learn about the innermost parts of other 'normal' galaxies. Moreover,  AGN are the most powerful sources, located at different cosmological time-scales, and their investigation is cosmologically important. Additionally, a part of emission from these objects (e.g. in the X-rays) has its origin very close to a massive black hole, and investigation of this emission can help us understand the physical processes in a strong gravitational field. 


On the other side, a number of AGN are affected by gravitational lensing effect. Studies aimed at determining the influence of microlensing on spectra of lensed quasars (hereafter QSOs) ought to account for the complex structure of the QSO central emitting region. Since the sizes of the emitting regions are wavelength-dependent, microlensing by stars in a lens galaxy will lead to a wavelength-dependent magnification. 


Efficace theoretical analyzis, synthezis and modelling of stellar spectra as well as the spectra from other plasma sources, depends on atomic data and their sources. In particular for the modeling of stellar atmospheres and opacity calculations a large number of atomic data is needed, since we do not know a priori the chemical composition of a stellar atmosphere. Consequently the development of databases with atomic data and astroinformatics is important for stellar spectroscopy.


Investigation of spectral line profiles is of significance for various research fields not only in astrophysics, where, for example, by analysis of stellar line profiles we can obtain effective temperature, chemical composition, surface gravity and other data on the investigated star, but also for a number of topics in physics and technology


The workshop is planned as an opportunity to consider above mentioned aspects of spectroscopic research on plenary sessions and than to work on the special mini-projects, which will result in common papers to be published in international astronomical journals) during the workshop.