On the Wilson-Bappu relationship in the Mg II k line
Astrophysics
2011-05-23 v1
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.
Cite
@article{arxiv.astro-ph/0106070,
title = {On the Wilson-Bappu relationship in the Mg II k line},
author = {A. Cassatella and A. Altamore and M. Badiali and D. Cardini},
journal= {arXiv preprint arXiv:astro-ph/0106070},
year = {2011}
}
Comments
8 pages, 8 figures Accepted for publication on A&A