IIA Institutional Repository

Browsing by Author "Jayakumar, K"

Browsing by Author "Jayakumar, K"

Sort by: Order: Results:

  • Spectral Line Variations in the Ap Star HD 42536 
    Babu, G. S. D; Jayakumar, K; Velu, C; Sujatha, S (Astronomical Society of India, 2003)
    The Sr-Cr type chemically peculiar star HD 42536 (= HR 2195) was observed with the 2.34 meter Vainu Bappu Telescope. Kavalur during the period of November 1998 to April 1999. A total of 46 spectrograms were obtained in the ...
  • A spectroscopic study of the hybrid pulsator Gamma Pegasi 
    Pandey, C. P; Morel, T; Briquet, M; Jayakumar, K; Bisht, S; Sanwal, B. B (Austrian Academy of Sciences Press, 2011-02)
    The recent detection of both pressure and high-order gravity modes in the clas- sical B-type pulsator γ Pegasi offers promising prospects for probing its internal structure through seismic studies. To aid further modelling ...
  • A study of K i 7699 Å and related shell lines during the recent eclipse of ϵ Aurigae 
    Muthumariappan, C; Parthasarathy, M; Leadbeater, R; Potravnov, I. S; Appakutty, M; Jayakumar, K (Oxford University Press on behalf of the Royal Astronomical Society, 2014-12-11)
    We report high-resolution (R = 30 000, 45 000 and 75 000) echelle and medium-resolution (R = 22 000 and 10 000) spectroscopic observations of the long-period, eclipsing binary ε Aurigae during the 2009 - 2011 eclipse. ...
  • Variation of the Si II features in the chemically peculiar star - HD 115735 
    Sriraghavan, S. M; Jayakumar, K; Babu, G. S. D; Sujatha, S (Astronomical Society of India, 2004-06)
    The chemically peculiar star HD 115735 (= HR 5023 = 21 CVn) was observed with the 2.34 meter Vainu Bappu Telescope at Kavalur during the period of January 1999 to April 2000. A total of 47 spectrograms were obtained in the ...
  • VRI photometry of LMC SN 1987A 
    Rangarajan, K. E; Jayakumar, K; Appakutty, M; Sheriff, H. D (Konkoly Observatory, 1987-07)
  • ɛ Aur in eclipse: Post-AGB primary and disk-shaped secondary 
    Muthumariappan, C; Parthasarathy, M; Jayakumar, K; Appakutty, M (Cambridge University Press, 2012-08)
    We present physical and chemcal properties of the disk in the eclipsing binary system ɛ Aur by solving 2D radiative transfer problem. We also present preliminary results of our high resolution spectroscopic monitoring of ...

Search DSpace

Browse

My Account