Photometry of F-K type bright giants and supergiants. I - Intermediate band and H-Beta observations

Astronomy and Astrophysics – Astronomy

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Astronomical Photometry, F Stars, H Beta Line, K Stars, Supergiant Stars, Spectral Line Width, Stellar Luminosity, Stellar Spectra

Scientific paper

Over 1500 observations of 560 bright giants and supergiants of types F-K are presented and compared to the observations by Gray and Olsen (1991). The present results include intermediate-band which is slightly different from the Stromgren data by Gray and Olsen due to a different width for the v filter. A systematic difference in m(1) - M(1) with decreasing temperature is noted in the two H-Beta data sets, and the correlations are defined.

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