Journal of Astrophysics and Astronomy

, Volume 10, Issue 4, pp 433–438 | Cite as

Composite spectra

Paper 3: π aquilae
  • R. & R. Griffin


π Aquilae is a visual double star whose angular separation of 1 ”.4 is so small that the system has been regarded as a composite-spectrum binary. However, by taking advantage of the excellence of the site and optics of the Mount Wilson 100-inch telescope, we have been able to obtain spectra of each component separately; the spectral types are about G8 III and A2V

Key words

composite spectra visual binaries stars, individual π Aql 


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Copyright information

© Indian Academy of Sciences 1989

Authors and Affiliations

  • R. & R. Griffin
    • 1
  1. 1.The ObservatoriesCambridgeEngland

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