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Browsing by Author "Sumangala Rao, S"

Browsing by Author "Sumangala Rao, S"

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  • Chemical composition of a sample of candidate post-asymptotic giant branch stars 
    Sumangala Rao, S; Giridhar, S; Lambert, D. L (Wiley-Blackwell, 2012-01)
    We have derived elemental abundances for a sample of nine IRAS sources with colours similar to those of post-asymptotic giant branch (post-AGB) stars. For IRAS 01259+6823, IRAS 05208−2035, IRAS 04535+3747 and IRAS 08187−1905, ...
  • Chemical Compositions of RV Tauri Stars and Related Objects 
    Sumangala Rao, S; Giridhar, S (Institute de Astronomia, 2014-04)
    We have undertaken a comprehensive abundance analysis for a sample of relatively unexplored RV Tauri and RV Tauri like stars to further our understanding of post-Asymptotic Giant Branch (post-AGB) evolution. From our study ...
  • Is the Post-AGB Star SAO 40039 Mildly Hydrogen-Deficient? 
    Sumangala Rao, S; Pandey, G; Lambert, D. L; Giridhar, S (IOP Publishing, 2011-08-10)
    We have conducted an LTE abundance analysis for SAO 40039, a warm post-AGB star whose spectrum is known to show surprisingly strong He I lines for its effective temperature and has been suspected of being H-deficient and ...
  • Spectroscopic Studies of RV Tau and Related Objects 
    Sumangala Rao, S (Indian Institute of Astrophysics, 2013-04)

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