IIAP Publications: Recent submissions

  • The Wolf-Rayet binary HD 68273 
    Ganesh, K. S; Bappu, M. K. V (Kodaikanal Observatory, 1967-10)
  • Photoelectric and Spectrographic Studies of Nova Delphini (1967) 
    Doss, A. T; Bhatnagar, A; Natarajan, V (Kodaikanal Observatory, 1972-07)
    The measurement and analysis of the spectra of Nova Delphini (1967) obtained at Kodaikanal is presented. An estimate of the photospheric temperature of the nuclear star of the nova is also made
  • Raman and Astronomy 
    Bappu, M. K. V (Indian Academy of Sciences, 1971-05)
  • Narrow Band Photometry of Rho Puppis 
    Doss, A. T (Kodaikanal Observatory, 1969-07)
    Monochromatic flux values of the dwarf Cepheid Rho Puppis have been evaluated over the cycle from observations made in the 1967 season through four narrow band filters centred at 3858 A/sup0/ 4310 A/supo/, 4720 A/supo/ and ...
  • Two Colour Photoelectric observations of the eclipsing variable UW Canis Majoris 
    Doss, A. T (Kodaikanal Observatory, 1967-01)
    Photoelectric light curves of the eclipsing binary UW Canis Majoris have been obtained in the blue and yellow. A new ephemeris is given for the system. The depth of the primary minimum is about 0/supm/.45 in B and 0/supm/.47 ...
  • The Solar Magnetometer of Kodaikanal Observatory 
    Bhattacharyya, J. C (Kodaikanal Observatory, 1970-10)
    An instrument capable of measurement of weak longitudinal component of magnetic fields on the sun has been designed and constructed for operation with the horizontal solar telescope and high dispersion spectrograph of ...
  • Photoelectric light curve of YY Eridani 
    Bhattacharyya, J. C (Kodaikanal Observatory, 1966-12)
    Photoelectric light curves in B and V of the W Ursa majoris star YY Eridani have been determined. Gradual lengthening of the period has been observed
  • On the Polar Coronal Rays of the Sun 
    Bhatnagar, A; Raheem, K. C. A (Kodaikanal Observatory, 1970-10)
    A study of the polar coronal rays made on two eclipse photographs is presented. From the frequency distribution of polar rays, it is shown that the maximum distribution of polar rays occurs in an annular zone arround ...
  • The Evershed Effect and Line Asymmetry in Sunspot Penumbrae 
    Bhatnagar, A (Kodaikanal Observatory, 1966-11)
  • Influence of solar activity on the rainfall over India ILWS Workshop 2006 
    Hiremath, K. M (Quest Publications for ILWS, 2006)
    We use 130 years of Indian rainfall for studying correlative effects due to solar cycle and activity phenomena, viz., the occurrences of sunspot activity and the irradiance variations. Among all the seasons of the Indian ...
  • Head-on collision of disk-sphere galaxies 
    Namboodiri, P. M. S; Sastry, K. S; Narasimhan, K. S. V. S (2006-02)
    Numerical simulations are performed to study the tidal effects of non-merging rapid head-on collision between a disk galaxy and a spherical galaxy. The disk consists of three components – a disk, a bulge and a halo – and ...
  • Mathematical sciences: The dynamics of Colliding Galaxies 
    Namboodiri, P. M. S (2006-01)
    Galaxies interact in a multitude of ways with their environment. Such interactions can alter the morphological type of galaxies, trigger star formation and even produce active galactic nuclei. During the past three decades ...
  • Measurements of 220 GHz atmospheric transparency at IAO, Hanle, during 2000-2003 
    Ananthasubramanian, P. G; Yamamoto, S; Prabhu, T. P; Angchuk, D (Astronomical Society of India, 2004-06)
    A 220 GHz tipping radiometer was installed at the Indian Astronomical Observatory (IAO), Hanle (Latitude 32o46'46" N; Longitude 78o57'51" E; Altitude 4500 m, above msl) towards the end of December 1999. The system is in ...
  • Rotating compact star with superconducting quark matter 
    Panda, P. K; Nataraj, H. S (The American Physical Society, 2006-02)
    A compact star with superconducting quark core, the hadron crust and the mixed phase between the two is considered. The quark meson coupling model for hadron matter and the color flavor locked quark model for quark matter ...
  • Comments on `the white dwarf collapse in low mass binary systems' 
    Shylaja, B. S; Kochhar, R. K (D. Reidel Publishing Company, 1984-08)
    White dwarfs have been shown to possess high-angular momenta, in low-mass binary systems, in the context of formation of "spinars". Whether the collapse to a neutron star occurs spontaneously or is triggered by mass transfer ...
  • Very long period activity at the base of solar wind streams 
    Popescu, M. D; Banerjee, D; O`Shea, E; Doyle, J. G; Xia, L. D (EDP Science, 2005-11)
    Using time series data of spectral lines originating from a wide range of temperatures in the solar transition region, above a polar coronal hole, from SUMER (Solar Ultraviolet Measurements of Emitted Radiation) on SoHO ...
  • The extent of 3-min oscillations in regions other than sunspot plumes 
    Lin, C. -H; Banerjee, D; Doyle, J. G; O`Shea, E (EDP Science, 2005-12)
    The active region, AR0554, was observed with NIS/CDS on board SoHO to examine the extent and range of oscillations from a range of features. Among all the NIS spectral lines analysed, significant oscillations were found ...
  • Blinker/Macro-spicule activity in an off-limb polar region 
    O`Shea, E; Banerjee, D; Doyle, J. G (EDP Sciences, 2005-06)
    Using measurements of Ov 629.73 Å from the Coronal Diagnostic Spectrometer (CDS) on board SOHO we report on blinker activity in off-limb regions above the Northern pole of the Sun. The blinkers are found to be occurring ...
  • On the widths and ratios of MgX 609.79 and 624.94 Å lines in polar off-limb regions 
    O`Shea, E; Banerjee, D; Doyle, J. G (EDP Science, 2005-06)
    Using measurements of MgX 609.78 and 624.94 Å lines from the Coronal Diagnostic Spectrometer (CDS) on board SOHO, we seek to examine the variation of line width and line ratio in regions far off-limb at the Northern pole ...
  • Memoirs of the Kodaikanal Observatory, Volume II: An Atlas of Equatorial Ionograms 
    Bhargava, B. N; Saha, A. K (Kodaikanal Observatory, Kodaikanal, 1967)

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