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Browsing by Subject "Hertzsprung-Russell Diagram"

Browsing by Subject "Hertzsprung-Russell Diagram"

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  • A possible P-L relation for RR-Lyrae variables in globular clusters 
    Scaria, K. K (Kluwer Academic Publishers, 1984-08)
    A study of the mean photographic magnitudes of RR Lyrae variables in galactic globular clusters has shown that the luminosity of RR-ab variables decreases with period. It is found that RR-ab variables, in the cluster ω ...
  • Possible proto-planetary nebulae 
    Parthasarathy, M (Cambridge University Press, 1989)
    IRAS data for high-galactic-latitude F supergiants, a few luminous F-G stars, and a few peculiar (forbidden) emission-line stars reveal they have dust shells with characteristics similar to those observed in planetary ...

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