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Browsing Publications of Astronomical Society of India by Title

Browsing Publications of Astronomical Society of India by Title

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  • Intensity Changes in Sunspots and Starspots 
    Venkatakrishnan, P (Astronomical Society of India, 1978-12)
  • Intensity Variation of Photons During the Solar Eclipse 
    Chandole, S. V; Shah, S. S (Tata Institute of Fundamental Research, Bombay, 1980-06)
    The study was aimed to determine the variation of intensity of photons from the Sun during solar eclipse at Aurangabad (altitude 586 meters, latitude 19 degree 5' and longitude 95 degree 24'). It was carried out with the ...
  • Interfacial hydromagnetic waves with shear and inclined magnetic fields 
    Satya Narayanan, A; Ramesh, R (Astronomical Society of India, 2002-09)
    The combined effect of non-parallel propagation, steady :flow and inclined magnetic field on the . propagation characteristics of hydromagnetic surface waves is examined. The fluid is assumed to be perfectly conducting ...
  • Interferometric Eclipse Observations of Coronal Fe XIV Emission 
    Smartt, R. N; Zirker, J. B; Mauter, H. A (Tata Institute of Fundamental Research, Bombay, 1980-06)
    An experiment carried out during the February 16, 1980 total solar eclipse to measure velocities and intensity distributions associated with coronal loops is described. The optical instrumentation used consisted of a 30-cm ...
  • Intermediate Galactic Latitude Starforming Region-CG 12 
    Maheswar, G; Manoj, P; Bhatt, H. C (Astronomical Society of India, 2002-09)
    Optical linear polarization measurements of stars seen projected towards CG 12, an intermediate latitude (b = 2P .1) starforming cloud, have been made. The results show that the polarization vectors of the majority of the ...
  • Intermediate Galactic Latitude Starforming Region-CG 12 
    Maheswar, G; Manoj, P; Bhatt, H. C (Astronomical Society of India, 2002-09)
    Optical linear polarization measurements of stars seen projected towards CG 12, an intermediate latitude (b = 2P .1) starforming cloud, have been made. The results show that the polarization vectors of the majority of the ...
  • Internal motions in the open star clusters NGC 654 and 6087 
    Sagar, R; Bhatt, H. C (Astronomical Society of Indian, 1989-03)
    Proper motion measurements are used to study the internal kinematics in the open star clusters NGC 654 and 6087. It is found that intrinsic dispersions are independent of stellar mass and radial distance in both clusters. ...
  • The internal motions of the spiral of canes venatice 
    Ridsdale, A. C (Astronomical Society of India, 1918)
  • Internal rotation and toroidal part of the magnetic field of AB Doradus 
    Hiremath, K. M (Astronomical Society of India, 2000)
    We solve analytically Chandrasekhar's (1956) MHD equations for the steady parts of internal rotation and toroidal component of the magnetic field of the AB Doradus. By taking observed (Donati and Cameron 1997) surface ...
  • International collaboration - Global Oscillation Network Group (GONG) 
    Bhatnagar, A (Astronomical Society of India, 1998)
    Global Oscillation Network Group (GONG) is a community based International programme to study the solar interior through the use of the technique of heliseismology. The GONG programme was initiated at the National Solar ...
  • Interplanetary disturbances and their association with large-scale magnetic field on the sun 
    Manoharan, P. K (Astronomical Society of India, 1998)
    The principal purpose of this paper is to review recent progress in the study of three-dimensional aspects of interplanetary disturbances on the basis of interplanetary scintillation measurements. The scintillation technique ...
  • Interpretation of angular diameter measurements of Mira variables: role of water 
    Tej, A; Lancon, A; Scholz, M (Astronomical Society of India, 2005-06)
    For stars with atmospheres as complex as those of Miras, determination of fundamental stellar parameters remains a challenge. Occurrence of water "shells" and their implication on the interpretation of the angular diameter ...
  • Interstellar biomolecules and infrared astronomy 
    Rastogi, S (Astronomical Society of India, 1999)
    The ubiquitous presence of organic molecules in the interstellar clouds, comets and asteroids, and the evidence of extraterrestrial amino acids in carbonaceous meteorites strongly support a cosmic perspective on the origin ...
  • Interstellar dust studies with TAUVEX 
    Maheswar, G; Muthu, C; Sujatha, N. V; Pandey, G; Bhatt, H. C; Kameswara Rao, N; Murthy, J (Astronomical Society of India, 2007-06)
    We propose to carry out studies on the properties of inter- stellar dust using TAUVEX. Through the multi-band TAUVEX observations, particularly with the use of filters optimized for extinction observations of the 2175 ° ...
  • Interstellar grains in the regions of anomalous extinction 
    Vaidya, D. B; Anandarao, B. G (Astronomical Society of India, 1993)
    We have evaluated the interstellar extinction curve and the ratio R of the total to the selective extinction using exact computations of extinction efficiencies for various grain models. The computed results are compared ...
  • Interstellar grains towards Orion 
    Vaidya, D. B; Anandarao, B. G; Desai, J. N (Astronomical Society of India, 1999)
    Using discrete dipole approximation (DDA) we calculate the extinction efficiencies of the porous silicate grains. We use these efficiencies to reproduce the observed extinction in the region of star formation in Orion and ...
  • Interstellar Matter 
    Krishna Swamy, K. S (Astronomical Society of India, 1974-03)
  • Intracluster extinction in young open star clusters 
    Sagar, R; Qian, Z. Y (Astronomical Society of India, 1993)
    An analysis of near-infrared data in combination with optical observations, indicates a normal interstellar extinction law around hot O and B stars at wavelengths greater than or = 0.9 micrometers. At shorter wavelengths, ...
  • Introduction to Markarian 421 special session 
    Fleury, P (Astronomical Society of India, 2002)
  • An introduction to the Indian Astronomical Observatory, Hanle 
    Cowsik, R; Srinivasan, R; Prabhu, T. P (Astronomical Society of India, 2002)
    Situated in the high-altitude cold desert of Changthang Ladakh bordering Himachal Pradesh and Tibet, Indian Astronomical Observatory, Hanle (32o46m46sN, 78o57'51''E; 4500 m above msl), provides excellent opportunities for ...

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