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On the Wilson-Bappu relationship in the Mg II k line

A. Cassatella·A. Altamore·M. Badiali·D. Cardini
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Abstract

An investigation is carried out on the Wilson-Bappu effect in the Mg II k line at 2796.34 A. The work is based on a selection of 230 stars observed by both the IUE and HIPPARCOS satellites, covering a wide range of spectral type and absolute visual magnitudes. The Wilson-Bappu relationship here provided is considered to represent an improvement over previous recent results for the considerably larger data sample used as well as for a proper consideration of the measurement errors. No evidence has been found for a possible dependence of the WB effect on stellar metallicity and effective temperature.

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A. Cassatella, A. Altamore, M. Badiali, D. Cardini. 2001-06-05. On the Wilson-Bappu relationship in the Mg II k line. https://doi.org/10.1051/0004-6361%3A20010816

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