IIA Institutional Repository

Browsing by Subject "Stellar Motions"

Browsing by Subject "Stellar Motions"

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  • A classification scheme for pulsars 
    Kochhar, R. K (Nature Publishing Group, 1977-11)
    The implications of a pulsar classification scheme are discussed. Three types of pulsars are distinguished - Type S (S for single) from supernova explosions of single stars; type D (D for disrupted) from binaries disrupted ...
  • The determination of a spectroscopic binary orbit 
    Singh, M (Kluwer Academic Publishers, 1984-03)
    An efficient analytical method for determining the orbit of a spectroscopic binary is presented. The advantages of the method are: (1) its accuracy, (2) its rapidity, and (3) the possibility of making adjustments in the ...
  • Effect of dynamical friction on the escape of a supermassive black hole from a galaxy 
    Kapoor, R. C (D. Reidel Publishing Company, 1985-05)
    We have used the impulsive approximation technique to numerically estimate the effect of dynamical friction on the motion of a supermassive black hole (mass 109 M ) through a galaxy (mass=1011 M ) which has recoiled from ...
  • Internal kinematics of open star clusters 
    Sagar, R; Bhatt, H. C (Royal Astronomical Society, 1989-02)
    Proper motion measurements are employed to investigate the internal kinematics of eight open star clusters. In most of the clusters considered, no dependence of the intrinsic dispersion in proper motion on stellar mass and ...
  • Kinematical distances to open star clusters 
    Sagar, R; Bhatt, H. C (Indian Academy Sciences, 1988-06)
    Kinematical distances are estimated for six open star clusters. They agree fairly well with the photometric distances. The kinematical distances cannot, at present, be estimated better than the photometric distances. When ...
  • On the dynamical evolution of a spheroidal cluster. II - Anisotropic velocity distribution 
    Sunder, G. S; Kochhar, R. K (Royal Astronomical Society, 1986-08)
    The dynamical evolution of a spheroidal cluster of point masses is investigated theoretically, extending the analysis of Som Sunder and Kochhar (1985) by removing the assumption of locally isotropic velocity. The basic ...
  • On the dynamical evolution of a spheroidal cluster. II - Anisotropic velocity distribution 
    Som Sunder, G; Kochhar, R. K (Royal Astronomical Society, 1986-08)
    The dynamical evolution of a spheroidal cluster of point masses is investigated theoretically, extending the analysis of Som Sunder and Kochhar (1985) by removing the assumption of locally isotropic velocity. The basic ...
  • Orbit of the spectroscopic binary B Persei 
    Rajamohan, R; Parthasarathy, M (Indian Academy of Sciences, 1975-04)
    Spectroscopic orbital elements are derived for the close binary system b Persei on the basis of forty spectrograms. The period is redetermined as 1.527360 days, and variations in the orbital elements are confirmed by ...
  • A study of the spatial stellar mass distribution in some young open clusters 
    Sagar, R; Miakutin, V. I; Piskunov, A. E; Dluzhnevskaia, O. B (Royal Astronomical Society, 1988-10)
    The stellar spatial distribution is studied as a function of mass in 11 young open clusters. In seven of these clusters, mass segregation is observed. The possibility of two cluster centers for NGC 2264 is discussed. It ...

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