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Browsing IIAP Publications by Title

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  • Spectroscopy of Scorpio-Centaurus association 
    Rajamohan, R (Centre of Advanced Study in Astronomy, Osmania University, 1973)
    Rotational velocities and intensities of hydrogen and helium lines for over 40 members of the Scorpio Centaurus association are presented. From the measured equivalent width of H alpha and H delta some evidence is found ...
  • Spectroscopy of the post-AGB star HD 101584 (IRAS 11385-5517) 
    Sivarani, T; Parthasarathy, M; García-Lario, P; Manchado, A; Pottasch, S. R (The European Southern Observatory, 1999-06)
    From an analysis of the spectrum (4000 Ä to 8800 Ä) of HD 101584 it is found that most of the neutral and single ionized metallic lines are in emission. The forbidden emission lines of [OI] 6300 Ä and 6363 Ä and [CI] 8727 ...
  • Spectroscopy, Multicolour Photometry and Structure of the Solar Corona during the Total Solar Eclipse on October 24, 1995 
    Rusin, V; Klocok, L; Minarovjech, M; Rybansky, M (Indian Institute of Astrophysics, Bangalore, 1997)
    A brief description of the scientific goals and preliminary results related to the 24 October 1995 solar eclipse at Nim Ka Thana is given. The white-light corona was of a minimum type above the E- and W-limbs. Coronal holes ...
  • The Spectrum of Comet Ikeya-Seki (1965f) 
    Bappu, M. K. V; Sivaraman, K. R (Kodaikanal Obsevatory, 1966-12)
    Spectroscopic observations of Comet Ikeya-Seki (1965f) with slit and slitless instruments are described. Sodium emission in the coma is seen from October 9 to November 1. A sodium tail extending upto 2 degree from the ...
  • Spectrum of density fluctuations in the solar wind 
    Krishan, V (World Scientific Publishing Company, 2009)
    The power spectrum of density fluctuations in the solar wind and its relations with the spectra of the velocity and magnetic field fluctuations is investigated. The density fluctuations could behave as a passive scalar and ...
  • Spectrum of doubly ionised arsenic 
    Rao, A. S; Narayan, A. L (Nature Publishing Group, 1929-08-10)
    THE deepest term of the separation of doubly ionised arsenic (As III) is 4p 2P1. The values of these doublet terms relative to 2G were reported in a recent paper (Ind. J. Phy., 5, 3, p. 3) to be 220, 221 cm.-1. It was found ...
  • The spectrum of gamma velorum 
    Rajamohan, R (Centre of Advanced Study in Astronomy, Osmania University, 1973)
    From a measurement of the equivalent width of H alpha in the star gamma 1 Velorum, it is found that My (gamma1 Vel)=-3.1. Assummg gamma 1 and 2 Velorum are at the same distance, a distance modulus of 7.4 magnitudes for ...
  • Spectrum of S Aps at deep minimum 
    Kameswara Rao, N; Goswami, A; Smith, V. V; Lambert, D. L (Astronomical Society of the Pacific, 1996)
  • Spectrum of Solar Type I Continuum Noise Storm in the 50-80 MHz Band and Plasma Characteristics in the Associated Source Region 
    Sundaram, G. A. S; Subramanian, K. R (The American Astronomical Society, 2004-04-20)
    Continuum observations of a solar noise storm in the frequency range of 50-80 MHz observed with the Gauribidanur radio spectrograph during 2000 September 26 and 27 are presented here. The radio spectral index of the noise ...
  • The spectrum of Sunspots 
    Evershed, John (Kodikanal Observatory, Kodaikanal, 1909)
  • The Spectrum of the Cool R Coronae Borealis Variable S Apodis in a Deep Decline 
    Goswami, A; Kameswara Rao, N; Lambert, D. L; Smith, V. V (Astronomical Society of the Pacific, 1997-03)
    A high resolution spectrum (5575 - 8875\AA) of the cool R Coronae Borealis variable S Apodis in its 1993 deep decline is discussed. Narrow or chromospheric emission lines of Na I, K I, Ca II, and Ba II and broad emission ...
  • The spectrum of the cool R Coronae Borealis variable Z Ursae Minoris at minimum 
    Goswami, A; Kameswara Rao, N; Lambert, D. L (The Observatory, 1999-02)
  • Spectrum of the Recent Novae: Nova Andromedae 1986 and Nova Centauri 1986 
    Ashoka, B. N (Konkoly Observatory, 1987-08)
  • Spectrum variability of 25 Sextantis 
    Rajamohan, R; Paranjpye, A; Sajeev, T. P (Kluwer Academic Publishers, 1990-03)
    The identification of moderately strong spectral lines at a dispersion of 30 A per millimeter is given for the peculiar star 25 Sextantis. The observed variability of some of the lines are briefly described. It is found ...
  • Spectrum Variability of HD 147010 
    Kameswara Rao, N; Rajamohan, R (Konkoly Observatory, 1982-04)
  • Spectrum variability of some selected bright CP stars on the main sequence 
    Rajamohan, R (Kluwer Academic Publishers, 1990-03)
    The initial findings of a survey for spectrum variations in selected CP stars is reported. It is found that almost all observed mercury-manganese stars are spectrum variables. The implications of chemical anomalies in these ...
  • The spectrum variable HR 7817 = HD 194783 
    Rajamohan, R; Paranjpye, A (Konkoly Observatory, 1989-01)
  • Spin angular momentum of tidally affected galaxies 
    Namboodiri, P. M. S; Kochhar, R. K (Royal Astronomical Society, 1991-06)
    Numerical experiments have been performed to study the transfer of angular momentum to an initially non-rotating spherical galaxy as it undergoes a collision with a point mass perturber moving in a relative orbit of constant ...
  • Spin squeezing and quantum correlations 
    Mallesh, K. S; Sirsi, S; Sbaih, M. A. A; Deepak, P. N; Ramachandran, G (Indian Academy of Sciences, 2002-08)
    We discuss the notion of spin squeezing considering two mutually exclusive classes of spin-s states, namely, oriented and non-oriented states. Our analysis shows that the oriented states are not squeezed while non-oriented ...
  • Spin-Dependence of Meson Production in NN Collisions 
    Deepak, P. N; Hanhart, C; Ramachandran, G; Vidya, M. S (World Scientific Publishing Company, 2005-01)
    We present here a model-independent irreducible tensor approach to meson production in NN collisions, which leads to a spin-structure of the T-matrix valid at all energies together with exact partial-wave expansions for ...

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