Photoelectric observations and period study of AK Herculis

Details Photoelectric observations and period study of AK Herculis Photoelectric observations and period study of AK Herculis

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..247b&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 91, Apr.-May 1979, p. 247-251.

Astronomy and Astrophysics

Astronomy

12

Cepheid Variables, Eclipsing Binary Stars, Electrophotometry, Stellar Spectrophotometry, Radial Velocity, Stellar Magnitude, Stellar Motions

Scientific paper

The period of AK Her, a W UMa system, is discussed and a new light-time orbit is derived. Although the representation is satisfactory, the solution must be regarded as preliminary since observations cover only one period in the hypothetical triple system (78 yrs). The possible influence of a visual companion, about 4.6 arc seconds apart, is estimated. Additionally a set of 170 photoelectric observations is presented, defining three epochs of minimum.

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