IIA Institutional Repository

Browsing by Subject "Variable Stars"

Browsing by Subject "Variable Stars"

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  • Search for rapid V/R variability in Eta CEN 
    Ghosh, K. K (Royal Astronomical Society, 1989-10)
    In order to search for rapid V/R variability in the Be star, Eta Cen, a series of H-alpha profiles of this star were observed on three nights between May 28 and June 3, 1986. A method of estimating the standard deviation ...
  • Segregation of dust and abundance inhomogeneities in globular clusters 
    Bhatt, H. C (Royal Astronomical Society, 1988-08)
    Segregation of dust in globular cluster protoclouds is considered as a possible mechanism for producing the observed heavy element abundance inhomogeneities within globular clusters. Segregation of dust towards the protocloud ...
  • Some Physical Aspects of Scorpio-Centaurus Association 
    Rajmohan, R (Indian Institute of Astrophysics, Kodaikanal Observatory, Kodaikanal, 1974-10)
  • 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 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 ...
  • UBV Observations of R-Coronae Type Variables and Related Objects 
    Kameswara Rao, N (D. Reidel Publishing Co., 1980-07)
    UBV observations obtained during the period 1972-73 are presented for the following five R CrB stars: GU Sgr, SU Tau, XX CAm, DZ And, V973 Oph, and the hydrogen-poor, carbon-rich stars BD + 10 deg 2179 and HD 137613. ...
  • Ultraviolet variability of HD 62001 - The central star of the missing nebula V-V 1-7 
    Kameswara Rao, N; Gilra, D. P (Indian Academy of Sciences, 1983-03)
    IUE observations of HD 62001 do not confirm the ultraviolet variability of 0.15 mag seen from the ANS observations. These intriguing variations in ANS observations seem to be caused by a nearby (∼ 70 arcsec away) B star ...
  • The variability of HD 76536 
    Shylaja, B. S (Kluwer Academic Publishers, 1990-02)
    The spectrophotometric and photometric observations of the WC star HD 76536 are reported. The flux and the magnitude variations appear to be periodic. The possibilities of a compact binary are discussed.

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