SIMBAD references

1997A&AS..121..369C - Astron. Astrophys., Suppl. Ser., 121, 369-378 (1997/February-0)

Long-term monitoring of active stars. VI. UBV(RI)c observations collected in Sep.-Oct. 1990.


Abstract (from CDS):

In the framework of an extensive program focusing on the global properties and evolution of active stars, high-precision UBV(RI)c photometry of 9 selected stars, collected at the European Southern Observatory over the intervals 7-17 September and 30 September - 10 October 1990, is presented. Significant evolution of the light curves, period variations and evidence for long-term variability of the global degree of spottedness are found. Some of the spectral classifications are discussed. These observations contribute to the establishment of a time-extended photometric database which can give important clues on topics such as the stability of the spotted areas, differential rotation, solar-like cycles and the correlation between inhomogeneities at different atmospheric levels.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: late-type - stars: variables

VizieR on-line data: <Available at CDS (J/A+AS/121/369): table table3 table4 tables.tex>

Errata: Erratum A&AS 122, p. 397

Simbad objects: 30

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:1997A&AS..121..369C and select 'bookmark this link' or equivalent in the popup menu


© Université de Strasbourg/CNRS

    • Contact