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Browsing by Author "Rajamohan, R"

Browsing by Author "Rajamohan, R"

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  • Rotating light house effect 
    Rajamohan, R; Satya Narayanan, A (Global Journals Inc., 2013-07)
    We clarify as to how a precession period appears in the analysis of periodic phenomenon in Astrophysics. The observed redshift that is related to this phenomenon is shown to be 2a/V = 2 / T, where ‘a’ is the relative ...
  • Rotation in close binaries 
    Rajamohan, R; Venkatakrishnan, P (International Astronomical Union, 1980)
  • Some further measurements of Uranian ring condensations 
    Vasundhara, R; Bhattacharyya, J. C; Rajamohan, R; Mahra, H. S (Kluwer Academic Publishers, 1983)
    The results of photometric observations of the occultation of BD-19 degree 4222 by Uranus on April 26, 1981 from two stations in India conform with the model proposed by Elliot et al. (1981).
  • Spatial distribution of molecules and dust within the coma of Comet Halley 
    Sivaraman, K. R; Babu, G. S. D; Shylaja, B. S; Rajamohan, R (European Space Agency, 1986-12)
    Spectral scans of comet Halley were made at high spatial resolution using the Cassegrain focus (f/13) of the 102 cm reflector at Kavalur (India). The scans cover the wavelength region from 3900 to 6200 A and at 40 A ...
  • Speckle interferometric observations of the collision of comet Shoemaker-Levy 9 with Jupiter 
    Saha, S. K; Rajamohan, R; Vivekananda Rao, P; Sunder, G. S; Swaminathan, R; Lokanandham, B (Astronomical Society of India, 1997)
    Speckle interferometric technique has been used to obtain a series of short exposure images of the collision of comet Shoemaker-Levy 9 with Jupiter during the period of July 17-24, 1994 using the Nasmyth focus of 1.2 meter ...
  • Spectral classification at ultra-low dispersion 
    Rajamohan, R (D. Reidel Publishing Co., 1984-11)
    The accuracy of the ultralow-dispersion slitless-spectroscopy technique of Bappu and Parthasarathy (1977) in classifying early-type stars at great distances from the sun is investigated experimentally using a 5-min exposure ...
  • Spectrophotometry of Comet P/Halley. I - Flux, column density and emission gradients within the coma in the emission bands and the continuum 
    Sivaraman, K. R; Babu, G. S. D; Shylaja, B. S; Rajamohan, R (European Southern Observatory, 1987-11)
    The authors made spectral scans of comet P/Halley using the scanner at the Cassegrain focus (f/13) of the 102 cm reflector at Kavalur. The scans cover generally the wavelength region from 3900 to 6200 Å and are at 40 Å ...
  • Spectrophotometry of the inner corona 
    Rajamohan, R; Raheem, K. C. A; Jayarajan, A. P (Indian National Science Academy, 1981)
  • A spectroscopic study of the Scorpio-Centaurus association 
    Rajamohan, R (Indian Academy of Sciences, 1976-09)
    Rotational velocities for 112 members of the Scorpio-Centaurus association brighter than 8.5 magnitudes are derived from spectra obtained with a dispersion of 47 A/mm. Hydrogen and helium line intensities are determined ...
  • Spectroscopy of Scorpi-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 Hr and Hd some evidence is found for the ...
  • 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 ...
  • 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 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)
  • Stellar rotation on the zero age main sequence 
    Rajamohan, R (Royal Astronomical Society, 1978-09)
    Analysis of rotational velocities of unevolved members in clusters indicates that for a given mass the dispersion in the true rotational velocities is small for normal, single main-sequence stars. The envelope of highest ...
  • Supernovae and the AP Phenomenon 
    Rajamohan, R; Pati, A. K (International Astronomical Union, 1980)
  • Supernovae and the AP phenomenon 
    Rajamohan, R; Pati, A. K (Indian Academy of Sciences, 1980-12)
    We put forward evidence that relates the phenomenon of the chemically peculiar stars of the upper main sequence to Supernovae explosions in young clusters. In the Upper Scorpius region we find that a supernova shell has ...
  • Synchronization in binary stars 
    Rajamohan, R; Venkatakrishnan, P (Astronomical Society of India, 1981-12)
    Radiative dissipation of the dynamical tide is found to be inadequate in explaining the observed synchronization between orbital and rotational motions of the main sequence components of early-type binary stars. The ...

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