Rotational modulation of continuum and integrated line fluxes

  • Marcello Rodono
Additinal Papers
Part of the Lecture Notes in Physics book series (LNP, volume 254)


The methodology commonly adopted in studying quasi-periodic flux variations, which are produced by surface inhomogeneities on a rotating star — the so-called rotational modulation studies — is briefly and critically reviewed with particular emphasis on recent results concerning the physical characteristics and topology of stellar active areas at various atmospheric levels, and the inferred stellar differential rotation. The present observational limits are discussed and the need for highly accurate and dedicated photometry and spectroscopy with ground-based and space-born instruments is stressed, as a necessary and, maybe, sufficient condition for a breakthrough in the study of stellar activity.


Differential Rotation Rotational Modulation Line Flux Active Star Cool Star 
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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Marcello Rodono
    • 1
  1. 1.Istituto di AstronomiaUniversita' degli StudiCataniaItaly

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