Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...222..263f&link_type=abstract
Astrophysical Journal, Part 1, vol. 222, May 15, 1978, p. 263-268.
Astronomy and Astrophysics
Astrophysics
23
Binary Stars, Stellar Spectrophotometry, Variable Stars, X Ray Sources, Astronomical Photography, Light Curve, Periodic Variations, Stellar Spectra
Scientific paper
An optical light curve of AM Herculis from 1890 to 1976 is presented. The data were obtained from 338 blue photographic plates. For long-time scales greater than 100 days, variations up to 3 mag are detected, while for short-time scales less than 0.1 day, 1 mag variations are seen. A least-squares technique is described and used to analyze periodic variability. No true periodicities were found with periods between 2 and 10,000 days or around the binary period of 0.13 days.
Dexter L.
Feigelson Eric
Liller William
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