A systematic study of the ultraviolet spectra of the Algol-like semidetached binary stars is described. Revision of the traditionally accepted spectral types has been found necessary in most cases toward earlier spectral types. Superionized emission lines seen at total eclipses show interesting differences in intensities.
High resolution UV spectroscopic observations of the binary symbiotic star AG Peg obtained with the IUE satellite in the periode 1978-81 are analyzed. The variability of the fluxes and the radial velocities of emission lines accordingto orbital phase are presented, The observaions support a binary model with mass transfer from a hot rotationaly unstable subdvarf to a cool M giant.
Current scientific theories strive to find one theory, which would describe the origin of life on Earth, but so far none were successful. To succeed i this field, one has to broader their view and accompany the scientific question with philosophy and set firmly the framework of research and define its borders. In order to assess the philosophical part of the work, one needs not to resort to new ideas only, because men and women in the past have already expressed their thoughts. They are however nowadays remembered only in history of arts and philosophy. In our recent article published in Nature Astronomy, we presented a very complex model for the creation of methane and its reprocessing to more complex organic molecules including nucleic acid bases from simple gaseous precursors. The purpose of this work is to show the reoeating cycle of the creation of complex molecules from CO2 and their subsequent destruction back to their basic parent molecules in comparison with the idea of Hieronymus Bosch. and Svatopluk Civiš.
This study seeks an answer to the question when and how the Czech romantic K. H. Mácha (1810–1836) started to be seen as a “modern” poet who could inspire authors writing decades after his death. The study proves that the image of “modern” Mácha as the first Czech poet to achieve the autonomy of art already existed between 1860 and 1890, and that Mácha’s artistic reputation grew constantly throughout the second half of the 19th century. This argument is based on a vast amount of evidence, mostly taken from literary journalism and criticism between 1858 and 1910 (the latter year seeing the centenary of Mácha’s birth).