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UBV Observations of the Ultrashort Period Variable HZ 29

Published online by Cambridge University Press:  12 April 2016

W. Krzemiński

Extract

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The periodic light variability of HZ 29 (= AM CVn) discovered in 1962 by SMAK (1967) was subsequently studied in detail by OSTRIKER and HESSER (1968; hereinafter referenced as OH). The observations of SMAK were confirmed to the blue and ultraviolet light and those of OSTRIKER and HESSER to the integrated light; these revealed light variations in the form of a slightly distorted double sinusoid. This distortion manifests itself that the alternate maxima are broader and, consequently, the alternate minima occur near phase 0.54 P (when phases are counted from minima preceding broader maxima). The over-all amplitude of light oscillations is between 0.02 and 0.05 mag., the period, as determined by OH, is 1051.118 ±0.015 sec.

Type
III. Rapid and Ultrarapid Variables (Including X-Rax Sources)
Information
International Astronomical Union Colloquium , Volume 15: New Directions and Frontiers in Variable Stars Research , 1971 , pp. 178 - 181
Copyright
Copyright © Cambridge University Press 1971

References

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