Indian Institute of Astrophysics: Recent submissions

  • Variable stars in the old galactic cluster M67 
    Rajamohan, R; Bhattacharyya, J. C; Subramanian, V; Kuppuswamy, K (Astronomical Society of Indian, 1988-12)
    Schmidt plates of the old open galactic cluster M67 were obtained on twelve nights to find the most probable variables in the cluster. The Sabattier technique was used to derive the magnitudes of the cluster members. The ...
  • Project Kalki - A sky survey with the Schmidt telescope. 2 
    Rajamohan, R; Shankar, P. N; Bhattacharyya, J. C; Kuppuswamy, K; Paranjpye, A (Astronomical Society of Indian, 1988-03)
    The region of the sky photographed with the 45cm Schmidt telescope during 1987 March-May and the position of the asteroids detected on these plates are reported in this paper. Out of the 29 asteroids observed four have ...
  • Extinction measurements at Leh 
    Singh, J; Bhattacharyya, J. C; Raveendran, A. V; Mohin, S; Ashoka, B. N (Astronomical Society of India, 1988-03)
    Observations were started at Leh in 1984 with a view to finding the possibility of setting up an astronomical observatory for infrared observations. Results of extinction measurements in UBV bands obtained on 12 nights ...
  • Project Kalki - a Sky Survey with 45-CM Schmidt Telescope - I 
    Rajamohan, R; Bhattacharyya, J. C; Kuppuswamy, K; Paranjpye, A (Astronomical Society of Indian, 1987-12)
    A brief description of the sky survey project taken up with the 45 cm Schmidt telescope of the Vainu Bappu Observatory at Kavalur is given. Positions of 11 asteroids detected on plates taken during 1987 Feburary-March are reported
  • Plume-like structures of extinction clouds at 19 Saturn radii 
    Vasundhara, R; Bhattacharyya, J. C; Rozario, M (Astronomical Society of India, 1986-12)
    Observations of the occultation of the star SAO 158763 by Saturn's magnetospheric region around 19 Saturn radii on May 12, 1984 are compared with the observations by Mahra et al. (1985) of the same event. Certain disparities ...
  • Stellar chromospheres 
    Bappu, M. K. V (1969)
  • on the physical characteristics of Wolf-Rayet Stars 
    Bappu, M. K. V (University of Bihar, 1959-11)
    The Wolf-Rayet stars form a group of objects that have numerous peculiar features in their spectra. They are so named after their discoverers Wolf and Rayet of the Paris Observatory who first picked out three examples ...
  • A Physical analysis of Wolf-Rayet Spectra 
    Bappu, M. K. V (1958)
  • Physical conditions in Wolf-Rayet atmospheres 
    Bappu, M. K. V (1957-10)
    A critical discussion of present-day knowledge regarding the Wolf-Rayet atmosphere is presented. It is shown that the large widths usually ascribed to the emission lines are formed by heavy blending, and that the individual ...
  • Chromospheric phenomena in Wolf-Rayet stars and stars of spectral types F, G, K, M 
    Bappu, M. K. V (Indian Mathematical Society, 1954)
  • Three Wolf-Rayet binaries 
    Ganesh, K. S; Bappu, M. K. V (Kodaikanal Observatory, 1967-10)
  • The Wolf-Rayet eclipsing binary HD 193576 
    Ganesh, K. S; Bappu, M. K. V; Natarajan, V (Kodaikanal Observatory, 1967-10)
  • The Wolf-Rayet binary HD 68273 
    Ganesh, K. S; Bappu, M. K. V (Kodaikanal Observatory, 1967-10)
  • Raman and Astronomy 
    Bappu, M. K. V (Indian Academy of Sciences, 1971-05)
  • 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
  • The Microprocessor control of the Kavalur 234-cm optical telescope 
    Chinnappan, V; Bhattacharyya, J. C (Astronomical Society of India, 1985-06)
    This paper gives an introduction to the control system of the 234-cm optical telescope. The computer used in control is based on an INTEL 16 bit microprocessor. The VAX 11/780 system has a supervisory role in the control ...
  • Ca II K Emission in Canopus 
    Bappu, M. K. V; Mekkaden, M. V; Kameswara Rao, N (Astronomical Society of India, 1984-06)
    The Changes in the Ca II K line profile of the F0 supergiant Canopus have been studied from the high dispersion coude spectrograms obtained since 1975. The emission in the core of the line is variable in a timescale of few ...
  • Total Solar Eclipse of 1980 
    Bhattacharyya, J. C (Astronomical Society of India, 1978-03)
  • Discovery of a New Satellite of Uranus 
    Bhattacharyya, J. C; Kuppuswamy, K (Astronomical Society of India, 1977-03)

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