IIA Institutional Repository

Browsing by Subject "Stars:Activity"

Browsing by Subject "Stars:Activity"

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  • Chromospheric activity in cool stars and the lithium abundance 
    Mallik, S. G. V (The European Southern Observatory, 1998-10)
    A detailed analysis of the Ca II triplet lines lkern -4.1ptlower2pt char19 kern -0.8ptambdalkern -4.1ptlower2pt char19 kern -0.8ptambda8498, 8542, 8662 in 146 cool stars of all luminosities spanning a large range in ...
  • Photometric and polarimetric variability of the isolated T Tauri star TW Hydrae 
    Mekkaden, M. V (The European Southern Observatory, 1998-12)
    The photometric and polarimetric observations of the isolated T Tauri star TW Hya are presented. It is found that a period 2.196 days derived from the present data satisfies all the available photometry. The steep increase ...

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