Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...67..483v&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 67, no. 3, Feb. 1987, p. 483-506.
Astronomy and Astrophysics
Astrophysics
79
Dwarf Stars, G Stars, K Stars, Light Curve, Pleiades Cluster, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Angular Momentum, Momentum Transfer, Power Spectra
Scientific paper
The authors present the individual photometric measurements for 45 G and K dwarfs in the Pleiades cluster, many of which are variable. Sufficient data have been obtained to determine periods and lightcurves for 11 stars. The lightcurves are typical for stars with non-axially symmetric surface flux distributions. Rotation causes light received from these stars to vary, which phenomenon is known as the BY Draconis syndrome. A pronounced gap in the distribution of photometric periods between 0.6 and 6.0 days shows up. The current data set shows some of the fascinating details of what is probably the last stage in the pre-main-sequence evolution of a solar-type star.
Alphenaar P.
Meys J. M. J.
van Leeuwen Floor
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