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Effects of environmental and exciton screening in single-walled carbon nanotubes. Adamyan, Vadym M.; Smyrnov, Oleksii A.; Tishchenko, Sergey V. Conference: International Conference on Theoretical Physics (Dubna-Nano2008) . Web of Science 12 Адам’ян В. М. INTERNATIONAL CONFERENCE ON THEORETICAL PHYSICS 'DUBNA-NANO2008', Серия книг: Journal of Physics Core Collection Conference Series, 2008, V. 129 Electrical conductivity of dense non-ideal plasmas in external HF electric field. Tkachenko, IM; Adamyan, VM; Mihajlov, Web of Science 13 Адам’ян В. М. AA; etc. Conference: International Conference on Strongly Coupled Coulomb Systems . JOURNAL OF PHYSICS A- Core Collection MATHEMATICAL AND GENERAL, 2006, V. 39, Issue 17, pp. 4693-4697 ENERGY-LOSS SPECTRUM FOR INELASTIC-SCATTERING OF CHARGED- PARTICLES IN DISORDERED- Web of Science 14 Адам’ян В. М. SYSTEMS NEAR THE CRITICAL-POINT. GERASIMOV, OI; ADAMIAN, VM. PHYSICAL REVIEW A, 1989, V. 39, Core Collection Issue 12, pp. 6573-6581 Existence and uniqueness of contractive solutions of some Riccati equations. Adamjan, V; Langer, H; Tretter, C. Journal of Web of Science 15 Адам’ян В. М. functional analysis, 2001, V. 179(2), pp. 448-473. Core Collection General solution of the Stieltjes truncated matrix moment problem. Adamyan, Vadim M.; Tkachenko, Igor M. Conference: Web of Science 16 Адам’ян В. М. Colloquium on Operator Theory . Operator Theory and Indefinite Inner Product Spaces, Серия книг: OPERATOR THEORY Core Collection : ADVANCES AND APPLICATIONS, 2006, V. 163, pp. 1-22 High-frequency characteristics of weakly and moderately non-ideal plasmas in an external electric field. Mihajlov, AA; Web of Science 17 Адам’ян В. М. Djuric, Z; Adamyan, VM; etc. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2001, V. 34, Issue 21, pp. 3139-3144 Core Collection High-frequency electric-conductivity of a collisional plasma . Adamyan, V. M; Tkachenko, I. M. High temperature.1983, V. Web of Science 18 Адам’ян В. М. 21(3), pp. 307-314. Core Collection HIGH-T(C) SUPERCONDUCTIVITY AS A CONSEQUENCE OF AN OVERLAP OF A NONDEGENERATE AND A Web of Science 19 Адам’ян В. М. PLANE BANDS. ADAMYAN, VM; PAVLOV, BS. FIZIKA TVERDOGO TELA, 1992, V. 34, Issue 2, pp. 628-635 Core Collection INELASTIC ELECTRON-SCATTERING IN MULTI PARTICLE SYSTEMS. ADAMYAN, VM; GERASIMOV, OI. Web of Science 20 Адам’ян В. М. UKRAINSKII FIZICHESKII ZHURNAL, 1982, V. 27, Issue 6, pp. 935-939 Core Collection Kinetic coefficients of fully ionized plasmas. Adamyan, V. M; Djuric, Z; Ermolaev, A. M. Journal of physics D-applied Web of Science 21 Адам’ян В. М. physics, 1994, V. 27(5), pp. 927-933. Core Collection Large radius excitons in single-walled carbon nanotubes. Adamyan, Vadym M.; Smyrnov, Oleksii A. JOURNAL OF Web of Science 22 Адам’ян В. М. PHYSICS A-MATHEMATICAL AND THEORETICAL, 2007, V. 40, Issue 34, pp. 10519-10533 Core Collection Lattice thermal conductivity of graphene with conventionally isotopic defects. Adamyan, Vadym; Zavalniuk, Vladimir. Web of Science 23 Адам’ян В. М. JOURNAL OF PHYSICS-CONDENSED MATTER, 2012, V. 24, Issue 41 Core Collection Linear diatomic crystal: single-electron states and large-radius excitons. Adamyan, V. M.; Smyrnov, O. A. LOW Web of Science 24 Адам’ян В. М. TEMPERATURE PHYSICS, 2009, V. 35, Issue 5, pp. 394-399 Core Collection Local Scattering Problem and a Solvable Model of Quantum Network. Adamyan, Vadym; Pavlov, Boris. Conference: 7th Web of Science 25 Адам’ян В. М. Workshop on Operator Theory in Krein Spaces and Spectral Analysis . RECENT ADVANCES IN OPERATOR THEORY IN Core Collection HILBERT AND KREIN SPACES, Серия книг: Operator Theory Advances and Applications, 2010, V. 198, pp. 1 Mark Grigorievich Krein (on his 100th birthday anniversary). Adamyan, V. M.; Arov, D. Z.; Berezansky, Yu. M.; etc. Conference: International Conference on Modern Analysis and Applications . MODERN ANALYSIS AND Web of Science 26 Адам’ян В. М. APPLICATIONS: MARK KREIN CENTENARY CONFERENCE, VOL 1, Серия книг: Operator Theory Advances and Core Collection Applications, 2009, V. 190, pp. XI-XX Modified Krein Formula and Analytic Perturbation Procedure for Scattering on Arbitrary Junction. Adamyan, V.; Pavlov, B.; Yafyasov, A. Conference: International Conference on Modern Analysis and Applications . MODERN ANALYSIS AND Web of Science 27 Адам’ян В. М. APPLICATIONS: MARK KREIN CENTENARY CONFERENCE, VOL 1: OPERATOR THEORY AND RELATED Core Collection TOPICS, Серия книг: Operator Theory Advances and Applications, 2009, V. 190, pp. 3 NORMS OF POSITIVE DEFINITE TOEPLITZ MATRICES AND DETECTION OF ALMOST PERIODIC Web of Science 28 Адам’ян В. М. COMPONENTS IN RANDOM SIGNALS. Adamyan, Vadym; Luis Iserte, Jose; Tkachenko, Igor M.; etc. OPERATORS Core Collection AND MATRICES, 2014, V. 8, Issue 3, pp. 861-875 On a class of non-self-adjoint quadratic matrix operator pencils arising in elasticity theory. Adamjan, V; Pivovarchik, V; Web of Science 29 Адам’ян В. М. Tretter, C. JOURNAL OF OPERATOR THEORY, 2002, V. 47, Issue 2, pp. 325-341 Core Collection On the absolutely continuous subspace for non-selfadjoint operators. Adamyan, VM; Neidhardt, H. MATHEMATISCHE Web of Science 30 Адам’ян В. М. NACHRICHTEN, 2000, V. 210, pp. 5-42 Core Collection On the separation of certain spectral components of selfadjoint operator matrices. Adamyan, V; Mennicken, R. Conference: Web of Science 31 Адам’ян В. М. Workshop on Operator Theory and Analysis . OPERATOR THEORY AND ANALYSIS, Серия книг: OPERATOR Core Collection THEORY : ADVANCES AND APPLICATIONS, 2001, V. 122, pp. 1-11 On the spectral theory of degenerate quadratic operator pencils. Adamyan, V; Mennicken, R; Pivovarchik, V. Conference: International Workshop in Operator Theory and Its Applications (IWOTA 98) . RECENT ADVANCES IN OPERATOR Web of Science 32 Адам’ян В. М. THEORY: ISRAEL GOHBERG ANNIVERSARY VOLUME, Серия книг: OPERATOR THEORY : ADVANCES AND Core Collection APPLICATIONS, 2000, V. 124, pp. 1-19 On the summability of the spectral shift function for pair of contractions and dissipative operators. Adamjan, V. M; Web of Science 33 Адам’ян В. М. Neidhardt, H. Journal of operator theory, 1990, V. 24(1), pp. 187-206. Core Collection One-electron states and interband optical absorption in single-wall carbon nanotubes. Adamyan, Vadim; Tishchenko, Sergey. Web of Science 34 Адам’ян В. М. JOURNAL OF PHYSICS-CONDENSED MATTER, 2007, V. 19, Issue 18 Core Collection Optical HF electrical permeability, refractivity and reflectivity of dense non-ideal plasmas. Adamyan, VM; Grubor, D; Web of Science 35 Адам’ян В. М. Mihajlov, AA; etc. Conference: International Conference on Strongly Coupled Coulomb Systems . JOURNAL OF PHYSICS Core Collection A-MATHEMATICAL AND GENERAL, 2006, V. 39, Issue 17, pp. 4401-4405 Partial non-stationary perturbation determinants. Adamyan, V; Langer, H. Conference: International Conference on Operator Web of Science 36 Адам’ян В. М. Theory and Its Applications in Mathematical Physics . SPECTRAL METHODS FOR OPERATORS OF MATHEMATICAL Core Collection PHYSICS, Серия книг: OPERATOR THEORY : ADVANCES AND APPLICATIONS, V. 154, pp. 1-18 Partial non-stationary perturbation determinants for a class of J-symmetric operators. Adamyan, Vadim; Jonas, Peter; Langer, Heinz. Conference: 3rd Workshop on Operator Theory in Krein Spaces and Nonlinear Eigenvalue Problems . OPERATOR Web of Science 37 Адам’ян В. М. THEORY IN KREIN SPACES AND NONLINEAR EIGENVALUE PROBLEMS, Серия книг: Operator Theory Advances Core Collection and Applications, 2006, V. 162, pp. 1-17 Web of Science 38 Адам’ян В. М. Phonons in graphene with point defects. Adamyan, V.; Zavalniuk, V. Journal of physics-condensed matter, 2011, V. 23(1) Core Collection SCHRODINGER OPERATOR WITH SINGULAR ATTRACTING POTENTIAL. ADAMIAN, VM; PUSHEK, NS. Web of Science 39 Адам’ян В. М. DOKLADY AKADEMII NAUK SSSR, 1979, V. 249, Issue 1, pp. 81-85 Core Collection Solution of the truncated matrix Hamburger moment problem according to M.G. Krein. Adamyan, VM; Tkachenko, IM. Web of Science 40 Адам’ян В. М. Conference: Mark Krein International Conference on Operator Theory and Applications, 1997 Core Collection SOME FUNCTION THEORETIC PROBLEMS CONNECTED WITH THE THEORY OF SPECTRAL MEASURES OF Web of Science 41 Адам’ян В. М. ISOMETRIC OPERATORS. ADAMYAN, VM; AROV, DZ; KREIN, MG. LECTURE NOTES IN MATHEMATICS, 1984, Core Collection V. 1043, pp. 160-163 SOME LIMIT RELATIONS FOR MULTIDIMENSIONAL POSITIVE-DEFINITE TOEPLITZ MATRICES. ADAMYAN, Web of Science 42 Адам’ян В. М. VM. FUNCTIONAL ANALYSIS AND ITS APPLICATIONS, 1988, V. 22, Issue 1, pp. 44-45 Core Collection Spectral components of selfadjoint block operator matrices with unbounded entries. Adamyan, V; Langer, H; Mennicken, R; Web of Science 43 Адам’ян В. М. Saurer, J. Mathematische nachrichten, 1996, V. 178, pp. 43-80. Core Collection STATISTICAL STRUCTURE OF THE ENERGY-LOSS SPECTRUM OF CHARGED- PARTICLES SCATTERED IN Web of Science 44 Адам’ян В. М. DISORDERED MEDIA. ADAMYAN, VM; GERASIMOV, OI. THEORETICAL AND MATHEMATICAL PHYSICS, Core Collection 1988, V. 74, Issue 3, pp. 279-287 Sum rules and exact relations for quantal Coulomb systems. Adamyan, V. M; Tkachenko, I. M. Contributions to plasma Web of Science 45 Адам’ян В. М. physics, 2003, V. 43(5-6), pp. 252-257. Core Collection THE DIELECTRIC-CONSTANT OF LIQUEFIED INERT-GASES. ADAMIAN, VM; GERASIMOV, OI. UKRAINSKII Web of Science 46 Адам’ян В. М. FIZICHESKII ZHURNAL, 1981, V. 26, Issue 9, pp. 1496-1503 Core Collection The dynamic conductivity of strongly non-ideal plasmas: is the Drude model valid?. Adamyan, V. M.; Mihajlov, A. A.; Sakan, Web of Science 47 Адам’ян В. М. N. M.; etc. Conference: International Conference on Strongly Coupled Coulomb Systems . JOURNAL OF PHYSICS A- Core Collection MATHEMATICAL AND THEORETICAL, 2009, V. 42, Issue 21 THE RPA CONDUCTIVITY OF FULLY IONIZED PLASMAS IN A MAGNETIC-FIELD. Adamyan, V. M; Djuric, Z; Web of Science 48 Адам’ян В. М. Ermolaev, A. M; Mihajlov, A. A; Tkachenko, I. M. Journal of physics d-applied physics, 1994, V. 27(1), pp. 111-118. Core Collection The self-consistent determination of HF electroconductivity of strongly coupled plasmas.
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    Astron. Astrophys. 320, 500–524 (1997) ASTRONOMY AND ASTROPHYSICS Fundamental parameters of Wolf-Rayet stars VI. Large Magellanic Cloud WNL stars? P.A.Crowther and L.J. Smith Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK Received 5 February 1996 / Accepted 26 June 1996 Abstract. We present a detailed, quantitative study of late WN Key words: stars: Wolf-Rayet;mass-loss; evolution; fundamen- (WNL) stars in the LMC, based on new optical spectroscopy tal parameters – galaxies: Magellanic Clouds (AAT, MSO) and the Hillier (1990) atmospheric model. In a pre- vious paper (Crowther et al. 1995a), we showed that 4 out of the 10 known LMC Ofpe/WN9 stars should be re-classified WN9– 10. We now present observations of the remaining stars (except the LBV R127), and show that they are also WNL (WN9–11) 1. Introduction stars, with the exception of R99. Our total sample consists of 17 stars, and represents all but one of the single LMC WN6– Quantitative studies of hot luminous stars in galaxies are im- 11 population and allows a direct comparison with the stellar portant for a number of reasons. First, and probably foremost, parameters and chemical abundances of Galactic WNL stars is the information they provide on the effect of the environment (Crowther et al. 1995b; Hamann et al. 1995a). Previously un- on such fundamental properties as the mass-loss rate and stellar published ultraviolet (HST-FOS, IUE-HIRES) spectroscopy are evolution. In the standard picture (e.g. Maeder & Meynet 1987) presented for a subset of our programme stars.
  • Visual Double Star Measurements with an Alt-Azimuth Telescope

    Visual Double Star Measurements with an Alt-Azimuth Telescope

    Vol. 4 No. 2 Spring 2008 Journal of Double Star Observations Page 59 Visual Double Star Measurements with an Alt-Azimuth Telescope Thomas G. Frey California Polytechnic State University San Luis Obispo, CA 93407 Abstract: An alt-az mounted Newtonian telescope was used to determine the separation and position angle of seven known and five neglected double stars. The problem of field rotation was solved by modifying the usual observing technique. Separation and position angle determinations are described, and the standard deviations and mean errors for these measurements are presented. The direction of future studies is outlined. techniques were accurate and precise, additional Introduction measurements on neglected double stars listed in the Professional astronomers have carried out visual Washington Double Star Catalogue were made. double star measurements for over 200 years. These scientists measured the separation between double Double Star Observation: Equatorial vs. stars in arc seconds, and the position angle in degrees Alt-Az Mounts that defined the orientation of pairs with respect to Most observers involved in double star measure- celestial north. Over time, the orbital motion of each ments, including Argyle (p.x) and Teague (p.112), star can create a change in the observed separation recommend the use of equatorial mounted telescopes. and position angle if the pair proves to be binary in Such telescopes have drive motors that are oriented so nature. A binary star revolves around a common the right ascension axis rotates around the north center of mass. celestial pole, canceling out the Earth’s rotation and Today’s amateur astronomers continue to evaluate the image in the eyepiece remains stationary.