Monitoring solar-type stars for luminosity variations

Details Monitoring solar-type stars for luminosity variations Monitoring solar-type stars for luminosity variations

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988itp..work..197l&link_type=abstract

In NASA, Ames Research Center, Second Workshop on Improvements to Photometry p 197-214 (SEE N89-13310 04-89)

Astronomy and Astrophysics

Astronomy

Astronomy, Luminosity, Main Sequence Stars, Photometry, Variations, Amplitudes, Errors, Seasons, Statistical Analysis

Scientific paper

Since 1984, researchers have made more than 1500 differential photometric b (471 nm) and y (551 nm) measurements of three dozen solar-like lower main sequence stars whose chromospheric activity was previosly studied by O. C. Wilson. Here, researchers describe their methodology and the statistical tests used to distinguish intrinsic stellar variability from observational and instrument errors. The incidence of detected variability among the program and comparison stars is summarized. Among the 100 plus pairs of stars measured differentially, only a dozen were found that were unusually constant, with peak-to-peak amplitudes of seasonal mean brightness smaller than 0.3 percent (0.003 mag) over a two-to-three-year interval.

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