Abstract
Spectra of 60 M-type long-period and semiregular variables, obtained near the time of maximum at Siding Spring Observatory in Australia, from 1965–1967, have been classified on the Keenan system.
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Bidelman, W. P.: 1954, Astrophys. J. Suppl. Ser. 1, 175.
Keenan, P. C.: 1966, Astrophys. J. Suppl. Ser. 13, 333.
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© 1973 IAU
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Simon, L.W., Buscombe, W. (1973). Spectral Classification of Some Long-Period and Semiregular Variables Near Times of Maximum. In: Fehrenbach, C., Westerlund, B.E. (eds) Spectral Classification and Multicolour Photometry. International Astronomical Union / Union Astronomique Internationale, vol 50. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2627-7_8
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DOI: https://doi.org/10.1007/978-94-010-2627-7_8
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