SIMBAD references

1994A&AS..108..611L - Astron. Astrophys., Suppl. Ser., 108, 611-619 (1994/December-2)

A CaII and MgII luminosity/emission-width data base.


Abstract (from CDS):

The so-called Wilson-Bappu relationship (hereinafter W-B) is an empirical linear relation established in 1957. Formally simple, this relation links two observable parameters of a star: the CaII K line core emission width with the absolute magnitude of the star having chromospheric activity. Other Luminosity/Emission-width relationships were established on the basis of other chromospheric lines like MgII (2795.5A and 2802.7A) and Lyα (1215.9A). All these resonance lines are used as a diagnostic of physical properties of stellar chromospheres. We have reanalysed all the available data connected with the CaII K and the MgII k line widths in the literature from 1957 until today to be able to prepare a database containing all the essential information needed to study and to understand empirical stellar activity relationships.

Abstract Copyright:

Journal keyword(s): stars: chromospheres - stars: activity - catalogs

VizieR on-line data: <Available at CDS (J/A+AS/108/611): ca2 ca2k mg2 table5 table6>

Simbad objects: 28

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