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161. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p291.pdf
... We present the results of an ongoing survey of cool, late­type supergiants -- the descendants of massive O and B­type stars -- that has systematically detected magnetic fields in these stars using spectropolarimetric observations obtained with the ESPaDOnS at the Canada­France­Hawaii Telescope. Our observations reveal detectable, often complex Stokes V Zeeman signatures in the Least­Squares Deconvolution mean line profiles in a significant fraction of the observed sample of 30 stars. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p291.pdf -- 196.8 Кб -- 11.08.2011
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162. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p295.pdf
... The magnetic white dwarf WD 1953­011 demonstrates the presence of two­component magnetic field geometry in photosphere. The geometry consists of a weak, large­scale component, and a strong, localized component (magnetic "spot"). ... Motivated by this idea, and using all available observations of WD 1953­ 011 we examine the possible physical relationships between the suggested dark spot and the strong­field magnetic structure recently identified on the surface of this star. ... 296 VALYAVIN ET AL. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p295.pdf -- 357.3 Кб -- 11.08.2011
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163. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p303.pdf
... 303 ­ 313 Statistics of Magnetic Fluxes of Massive Stars and the Enigma of the Origin of Magnetic Fields in Neutron Stars Kholtygin A. F.1 , Igoshev A. P.2 , Fabrika S. N.2 1 2 Astronomical Institute of Saint­Petersburg State University, Russia Special Astrophysical Observatory, Nizhny Arkhyz, Russia Abstract. ... 3.5.2 Magnetic Flux Distribution for Massive and Neutron Stars Using the relation (9) we calculate the magnetic fluxes for all the stars with measured magnetic fields. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p303.pdf -- 262.8 Кб -- 11.08.2011
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164. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p314.pdf
... 314 ­ 321 Non­LTE Line Formation for Fe I and Fe I I in the Atmospheres of A­F Typ e Stars Mashonkina L. Institute of Astronomy, Moscow, Russia Abstract. ... Non­LTE leads to the Fe II lines strengthening, however, the effect is small, such that the abundance correction is at the level of -0.01 to -0.03 dex over the whole range of stellar parameters being considered. ... 2 What is Meant by the Non­LTE Approach? ... For the Fe I lines, we obtained the mean non­LTE abundance log FeI = 7.56 ± 0.09. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p314.pdf -- 231.6 Кб -- 11.08.2011
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165. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p322.pdf
... 322 ­ 329 Accuracy of Lab oratory Oscillator Strengths of Ti I I Lines as Checked Using High­Quality Stellar Sp ectra Boyko S.1 , Ryab chikova T. 1 2 2 Astronomical Department of the Physics Faculty, Moscow State University Institute of Astronomy, Russian Academy of Sciences, Moscow, Russia Abstract. ... There are 18 lines for which the difference between the IC laboratory oscillator strengths and those needed to fit stellar line profiles is 0.2 dex (50 %), while the claimed accuracy is 12­15 %. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p322.pdf -- 238.0 Кб -- 11.08.2011
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166. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p330.pdf
... 330 ­ 341 Time ­Resolved Photo electric, Photometric and High­Resolution Sp ectroscopic Data Analysis of a Luminous Ap Star HD 103498 Joshi S.1 , Joshi Y. C.1 , Ezhkova O. V.2 , Sachkov M.3 , Ryab chikova T.3 , Ko chukhov O.4 , Chakradhari N. K.5 , Tiwari S. K.6 ... The time series fast­ photometric observations were carried out during 17 nights using the PMT based three­channel fast photometer mounted on the 1.04­m Sampurnanand telescope of the ARIES at Nainital. ... 2007). ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p330.pdf -- 1235.2 Кб -- 11.08.2011
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167. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p342.pdf
Magnetic Stars, 2011, pp. 342 ­ 354 Study of Pulsations in the Atmosphere of the roAp star HD 137949 Sachkov M.1 , Hareter M.2 , Ryab chikova T. 1 2 3 4 1,2 , Wade G.3 , Ko chukhov O.4 , Weiss W. W.2 Institute of Astronomy, Russian Academy of Sciences, Moscow, Russia Institut fur Astronomie, UniversitЁ Wien, Wien, Austria Ё at Department of Physics, Royal Military College of Canada, Kingston, Ontario, Canada Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden Abstract. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p342.pdf -- 1096.8 Кб -- 15.08.2011
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168. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p355.pdf
Magnetic Stars, 2011, pp. 355 ­ 360 Line Profile Variability and a Possible Magnetic Field in the Sp ectra of Sup ergiant Ori Aa Kholtygin A. F.1 , Chountonov G. A.2 , Dushin V. V.1 1 2 Astronomical Institute of the St.­Petersburg State University Special Astrophysical Observatory, Nizhny Arkhyz, Russia Abstract. ... The fast line profile variability (LPV) with a period of about 3 hours is found and a connection of LPV with a non­radial pulsation of the star is supposed. ... 2 Main Data on Ori. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p355.pdf -- 360.7 Кб -- 11.08.2011
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169. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p361.pdf
Magnetic Stars, 2011, pp. ... Since the discovery of spectral variations in the Hg II line of the star And, a few other HgMn stars have been reported to present line profile variations. In this work we present preliminary results of a study of spectral variability in 28 single­lined HgMn stars. Using between two and six spectra per star, obtained with the FEROS spectrograph of the ESO, we quantitatively analyze the line profile variations for various chemical elements. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p361.pdf -- 298.1 Кб -- 11.08.2011
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170. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p366.pdf
Magnetic Stars, 2011, pp. 366 ­ 373 Sp ectral Variability of the Be Star HD 152478: Evidence for Magnetized Wind? ... Notable variations of line profiles have been found for a number of elements (H I, He I, Fe II, etc.) ... In this report we consider the large­scale profile variability, observed in the optically­thick H and H lines, and in several optically­thin Fe II lines. ... Figure 2: The same as in Fig. 1 but for H line profiles SPECTRAL VARIABILITY OF THE BE STAR HD 152478 .. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p366.pdf -- 1164.7 Кб -- 11.08.2011
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171. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p382.pdf
Magnetic Stars, 2011, pp. 382 ­ 389 Lithium and Isotopic Ratio 6Li/7Li in Magnetic roAp Stars As an Indicator of Active Pro cesses Polosukhina N.1 , Shavrina A.2 , Lyashko D.3 , Nesvacil N.4 , Kudryavtsev D.5 , Smirnova M ... University, Ukraine European Southern Observatory, Santiago, Chile Special Astrophysical Observatory, Nizhny Arkhyz, Russia Key words: lithium ­ Big Bang products ­ magnetic stars 1 The Problem of Lithium Lithium is one of few ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p382.pdf -- 554.5 Кб -- 11.08.2011
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172. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p390.pdf
... The spectrophotometric variability of the classical magnetic CP star 2 CVn is investigated in the ultraviolet spectral region from 1150 to 3200 ° This A. study is based on the archival International Ultraviolet Explorer data obtained at different phases of rotational cycle. ... Moreover, the minima values of the amplitude of light curves are reached in the spectral region at 1660 and 1900 ° The monochromatic light curves in the "pseudo­ A. continuum" of this star change their shapes with wavelength....
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p390.pdf -- 231.5 Кб -- 15.08.2011
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173. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p399.pdf
... 399 ­ 409 Variations of Flux Intensity in Large Features and Sp ectral Lines of 2 CVn in Ultraviolet Sokolov N. A. Central Astronomical Observatory at Pulkovo, St. Petersburg, Russia Abstract. Variation of flux intensity at the cores of large features and spectral lines of the classical magnetic CP star 2 CVn in the ultraviolet spectral region A from 1150 to 3200 ° is investigated. ... The variations of flux intensity at the cores of large features and spectral lines revel various behaviours. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p399.pdf -- 250.1 Кб -- 11.08.2011
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174. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p410.pdf
Magnetic Stars, 2011, pp. 410 ­ 414 Stars with Discrepant v sin i as Derived from the Ca I I 3933 and Mg I I 4481 ° Lines A z Zverko J.1 , Zinovsky J.1 , Iliev I.2 , Barzova I.2 , Romanyuk I.3 , Kudryavtsev D.3 , ґ 3 Semenko E. 1 2 3 Astronomical Institute, Slovak Academy of Sciences, Tatranskґ Lomnica, Slovak Republic a Institute of Astronomy, NAO Rozhen, Sofia, Bulgaria Special Astrophysical Observatory, Nizhny Arkhyz, Russia Abstract. ... 3 First Results HD 2913 Teff = 11 120 K, log g = 4.31. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p410.pdf -- 119.1 Кб -- 11.08.2011
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175. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p415.pdf
Magnetic Stars, 2011, pp. 415 ­ 418 High Resolution Sp ectroscopy of the Star Feige 34 Han I.1 , Burlakova T.2 , Valyavin G.3 , Kim H. S.4 , Galazutdinov G.5 , Zharikov S. V.3 , Lee B.­C.1 , Kim K.­M.1 , Kholtygin We present high­resolution spectral observations of the hot subdwarf sdO star Feige 34. ... How did the giant progenitors of these stars loose their envelopes? ... 4 Discussion We have presented new high­resolution spectral observations of the hot sdO subdwarf star Feige 34. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p415.pdf -- 139.0 Кб -- 11.08.2011
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176. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p419.pdf
Magnetic Stars, 2011, pp. 419 ­ 425 Binaries Among Magnetic CP Stars: Some Observational Results Semenko E. A., Rastegaev D. A., Dyachenko V. V., Kuchaeva E. Yu., ... BINARIES AMONG MAGNETIC CP STARS: SOME OBSERVATIONAL RESULTS 425 5 Conclusions Speckle interferometric observations carried out on the 6­m telescope by the Group of High Angular Resolution Methods in Astronomy of the SAO RAS shows that there are many wide binaries among the known "single" magnetic stars. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p419.pdf -- 194.6 Кб -- 11.08.2011
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177. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p431.pdf
... New period of the third body in the system of the eclipsing HgMn binary star AR Aur was derived based on new photoelectric and CCD observations. 1 Intro duction AR Aur (HD 34364, HR 1728) is a double­lined spectroscopic well­detached eclipsing binary with orbital period of 4d 13. ... Circles -- minima times computed by our method, squares -- minima times adopted from literature. minima determinations published new periods of the third body and new physical characteristics of the system. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p431.pdf -- 147.9 Кб -- 11.08.2011
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178. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p435.pdf
Magnetic Stars, 2011, pp. ... Our recent studies of HD 11753, a late B­type star showing a HgMn peculiarity for the first time revealed the presence of a fast dynamical evolution of chemical spots on the surface of this chemically peculiar early­type star. ... 2010). ... 4 Magnetic Field in AR Aur Typically, inhomogeneous chemical abundance distributions are observed only on the surface of magnetic chemically peculiar stars with organised large­scale magnetic fields. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p435.pdf -- 244.7 Кб -- 11.08.2011
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179. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p440.pdf
... The results of radio observations of GRB 080319B in the spectral range of 8.45 GHz are presented. ... Key words: Gamma­rays ­ bursts: observations ­ radio: individual: GRB 080319B 1 Intro duction Gamma­ray bursts (GRBs) are the most luminous explosions currently known in the Universe. ... Smooth angular scanning was used not only in GRB 080319B observations, but to specify the primary standard source radio flux density as well (Kharinov et al., ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p440.pdf -- 765.1 Кб -- 11.08.2011
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180. http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p444.pdf
Magnetic Stars, 2011, pp. 444 ­ 449 On Magnetic Field Generation Mechanisms in Astrophysics Cherny O. G. 1 2 Central (Pulkovo) Astronomical Observatory RAS, Saint­Petersburg, Russia Saint­Petersburg State Polytechnical University, Saint­Petersburg, Russia Abstract. ... The lines of force of this field ON MAGNETIC FIELD GENERATION MECHANISMS IN ASTROPHYSICS 445 are assumed to be frozen in the primary plasma, with the magnetic field increasing as the plasma is compressed. ...
[ Текст ]  Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p444.pdf -- 149.3 Кб -- 11.08.2011
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