Abstract
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
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Griffin, R.&.R. Composite spectra. J Astrophys Astron 10, 433–438 (1989). https://doi.org/10.1007/BF02715077
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DOI: https://doi.org/10.1007/BF02715077