On the possible nature of Bp-Ap Stars: an application to HD101065 and HR465

We have proposed the new explanation of some magnetic chemically peculiar (MCP) stars anomalies, which is based on assumption that such stars can be the close binary systems with a secondary component being neutron star. Within this hypothesis one can naturally explain the main anomalous features of MCP stars: first of all, an existence of the short-lived radioactive isotopes detected in some stars (like Przybylski's star and HR465), and some others peculiarities (e.g. the behavior of CU Vir in radio range, the phenomenon of the roAp stars).Comment: 5 pages, 5 figure

About the chemical composition of delta Scuti - the prototype of the class of pulsating variables

We present chemical abundances in the photosphere of $\delta$ Scuti -- the prototype of the class of pulsating variables -- determined from the analysis of a spectrum obtained at Terskol observatory 2 meter telescope with resolution $R=52,000$, signal to noise ratio 250. VLT and IUE spectra were used also . Abundance pattern of \dsct consists of 49 chemical elements. The abundances of Be, P, Ge, Nb, Mo, Ru, Er, Tb, Dy, Tm, Yb, Lu, Hf, Ta, Os, Pt, Th were not investigated previously. The lines of third spectra of Pr and Nd also are investigated for the first time. The abundances of heavy elements show the overabundances with respect to the Sun up to 1 dex. The abundance pattern of \dsct is similar to that of Am-Fm stars.Comment: 8 pages, 2 figures, subm. to Proc. of IAU Symp. 22

Some evolutionary aspects of the binary stellar systems containing neutron star

The obvious lack of the binary stellar systems that contain neutron stars (NS) is observed at present. Partly it is caused by the fact that it is very difficult to detect neutron star in a binary system if this relativistic component does not manifest itself as a radio pulsar. Among 1879 pulsars that are listed in the ATNF pulsar catalogue, only 141 pulsars are known to be the companions in binary systems. Only 81 objects having median mass estimation of more than 0.2 $M_{\odot}$ constitute the binary systems with pulsars. Nevertheless, such systems should be much more numerous and their investigation is of the great interest because thier structure and evolution can certainly help in our understanding of many unique properties that are seen in some stars.Comment: Accepted to published in the Odessa Astronomical Publications, 2012, vol. 25/1, p.35-3

Some Statistical Picture of Magnetic CP Stars Evolution

We discuss some statistical results on the evolution of magnetic CP stars in the framework of the supposition about their binary nature.Comment: 3 pages, 3 figure

The chemical composition of a mild barium star HD202109

We present the result of chemical abundances of a mild barium star HD202109 (zeta Cyg) determined from the analysis of spectrum obtained by using a 2-m telescope at the Peak Terskol Observatory and a high-resolution spectrometer with R=80,000, signal to noise ratio >100. We also present the atmospheric parameters of the star determined by using various methods including iron-line abundance analysis. For line identifications, we use whole-range synthetic spectra computed by using the Kurucz database and the latest lists of spectral lines. Among the determined abundances of 51 elements, those of P, S, K, Cu, Zn, Ge, Rb, Sr, Nb, Mo, Ru, Rh, Pd, In, Sm, Gd, Tb, Dy, Er, Tm, Hf, Os, Ir, Pt, Tl, and Pb have not been previously known. Under the assumption that the overabundance pattern of Ba stars is due to wind-accretion process, adding information of more element abundances enables one to show that the heavy element overabundances of HD202109 can be explained with the wind accretion scenario model.Comment: 10 pages, Accepted by Astronomy and Astrophysic

ПРО ІНСТИТУЦІОНАЛЬНУ СИСТЕМУ МУЗИЧНОГО МИСТЕЦТВА СУСПІЛЬСТВА В АСПЕКТІ ПРОБЛЕМИ МАТЕРІАЛЬНОЇ І ДУХОВНОЇ КУЛЬТУРИ

In the article the problem of the material and spiritual culture of the society is represented. The author shows it as a meaningful basis for the separation of the musical artistic system’s institutional layer. The institutional system of musical art is presented through the example of creativity as a sphere of musical production, institutions of performance, radio broadcasting, critics (T. Adorno). The author emphasizes the establishments and social institutions, instruments and devices that serve all activities in terms of creation, preservation, reproduction, distribution, perception and use of musical values (A. Sokhor). The article also deals with a systematic organization of the process of value creators’ reproduction, a production of the consumers of the artistic values, artistic critics and science of culture and art (M. Kagan). The author gives two definitions of the institutions of musical culture. The first one is narrower – the author views the institutions as specific organizations and establishments (musical and educational institutions, music libraries, publishing houses, concert-philharmonic, musical and theatrical establishments, etc.). The second one is much broader – the author defines "institutions" as forms of musical art existence, distributed in the society (forms of creativity, performance, perception, musical and artistic education) (I.Tsygankova). It has been proved that institutional layer is included into the structure of the society’s spiritual culture.В статье рассматривается проблема материальной и духовной культуры общества как содержательная основа выделения институционального уровня системы музыкального искусства. Институциональная система музыкального искусства представлена на примере творчества как сферы музыкального производства, институтов исполнительства, радиотрансляций, критики (Т.Адорно); учреждений и социальных институтов, инструментов и оборудования, обслуживающих все виды деятельности по созданию, сохранению, воссозданию, распространению, восприятию и использованию музыкальных ценностей (А.Сохор); системной организации процесса воссоздания творцов ценностей, производства их потребителей, художественной критики, науки о культуре, искусстве (М.Каган); институтов музыкальной культуры, в узком смысле, как конкретных организаций, учреждений (музыкальные учебные заведения, нотные библиотеки, издательства, концертно-филармонические, музыкально-театральные учреждения) и "институтов", в широком смысле, как форм существования музыкального искусства, распространенных в обществе (творчество, исполнительство, восприятие, музыкально-художественного образование) (И.Цыганкова). Доказано, что институциональный слой заложен в структуре духовной культуры общества.У статті розглянуто проблему матеріальної і духовної культури суспільства як змістовного підґрунтя відокремлення інституційного прошарку системи музичного мистецтва. Представлено інституціональну систему музичного мистецтва на прикладі творчості як сфери музичного виробництва, інститутів виконавства, радіотрансляцій, критики (Т.Адорно); установ та соціальних інститутів, інструментів та обладнань, які обслуговують усі види діяльності зі створення, збереження, відтворення, поширення, сприймання та використання музичних цінностей (А.Сохор); системну організацію процесу відтворення творців цінностей, виробництво споживачів художніх цінностей, художню критику і науку про культуру та мистецтво (М.Каган); інститути музичної культури у вузькому смислі як конкретні організації, установи (музично-освітні, нотні бібліотеки, видавництва, концертно-філармонійні, музично-театральні тощо) та "інститути" в широкому смислі як форми існування музичного мистецтва, поширені в суспільстві (форми творчості, виконавства, сприймання, музично-художньої освіти) (І.Циганкова). Доведено, що інституціональний прошарок закладений у структуру духовної культури суспільства

Detailed chemical abundances of several CP-stars of the upper main sequence

We present a study of the chemical composition of atmospheres of five stars of the upper main sequence. Investigations of the SB2 system 66 Eri permit to find the gallium spots in atmospheres of the components, the secondary component of the system is a HgMn star, the primary can also be a HgMn star with less pronounced anomalies. The components of the double system HD153720 appear to be metallic-lined stars. A review of studies of the abundance of SB2 systems with A4–F1 components shows that the usually accepted fraction of stars with the solar chemical composition in this region of the HR diagram can be decreased. The abundance patterns of Sirius (>50 elements) in the region of heavy elements give us additional arguments for the hypothesis that not only a diffusion is responsible for the overabundances of these elements in Sirius. The abundance pattern of δ Sct (49 elements) appears to be similar to δ Del type stars, maybe, a subtype of the prototype of one of the largest class of pulsating variables should be changed. The abundance pattern of the Przybylski’s star is the best stellar abundance pattern (after that of the Sun). The possible identification of radioactive elements (84 ≤ Z ≤ 99) in the atmosphere of the Przybylski’s star needs abundance determinations and can be the clue to the understanding of the nature of all CP stars