# Water on the Early M Supergiant Stars α Orionis and μ Cephei

@article{Tsuji2000WaterOT,
title={Water on the Early M Supergiant Stars $\alpha$ Orionis and $\mu$ Cephei},
author={T. Tsuji},
journal={The Astrophysical Journal},
year={2000},
volume={538},
pages={801-807}
}
• T. Tsuji
• Published 2000
• Physics
• The Astrophysical Journal
We reanalyze the spectra of α Ori (M2 Iab) and μ Cep (M2 Ia) observed with the balloon-borne telescope Stratoscope II more than 35 years ago, and we confirm the presence of water in these early M supergiant stars. This identification was first proposed by the Stratoscope observers themselves (Woolf, Schwarzschild, and Rose in 1964; and Danielson, Woolf, and Gaustad in 1965), but this important discovery was overlooked for a long time without any follow-up observation. Consequently, this finding… Expand

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