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Spectral Classification: Old and Contemporary

  • Sunetra Giridhar
Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)

Summary

Beginning with a historical account of the spectral classification, its refinement through additional criteria is presented. The line strengths and ratios used in two dimensional classifications of each spectral class are described. A parallel classification scheme for metal-poor stars and the standards used for classification are presented. The extension of spectral classification beyond M to L and T and spectroscopic classification criteria relevant to these classes are described. Contemporary methods of classifications based upon different automated approaches are introduced.

Spectral classification luminosity classes metal-poor stars M-L-T spectral classes 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Sunetra Giridhar
    • 1
  1. 1.Indian Institute of AstrophysicsBangaloreIndia

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