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Browsing by Subject "Mira variables"

Browsing by Subject "Mira variables"

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  • Dust envelopes around RV Tauri stars 
    Raveendran, A. V (The Royal Astronomical Society, 1989-06)
    In the IRAS (12)-(25), (25)-(60) color-color diagram, RV Tauri stars are found to populate cooler temperature regions, distinctly different from those occupied by the oxygen and carbon Miras. The IRAS fluxes are consistent ...
  • Evidence of asymmetry in Mira variable U Ori 
    Mondal, S (Astronomical Society of India, 2005-06)
    Near simultaneous, two high angular resolution observations by lunar occultation technique at the same wavelength (2.2mu m) but at different position angles (PA) result in two unique Uniform Disk (UD) angular diameters of ...
  • Long-term polarimetric behaviour of the carbon Mira R Leporis 
    Raveendran, A. V; Kameswara Rao, N (European Southern Observatory, 1989-05)
    BVRI polarimetry of R Lep obtained during 1984-1987 shows large changes in the normalized wavelength dependence of polarization. It is found that both the amount and position angle of polarization had components which ...
  • Notes for the Observer 
    Prabhu, T. P (Astronomical Society of India, 1982-06)
  • Variation of linear polarization in the R Aquarii system 
    Deshpande, M. R; Joshi, U. C; Kulshrestha, A. K; Sen, A. K; Kameswara Rao, N; Raveendran, A. V (Astronomical Society of the Pacific, 1987-01)
    Linear polarization measurements of the R Aqr system are reported here. The R Aqr system shows strong wavelength dependence of percent polarization and position angle, which are strongly time dependent also. There is a ...

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