Observations of CY Aquarii 1981 - 1984 and recent evolution of the period.

Details Observations of CY Aquarii 1981 - 1984 and recent evolution of the period. Observations of CY Aquarii 1981 - 1984 and recent evolution of the period.

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988geocr..11.....r&link_type=abstract

GEOS Circular on RR Lyr Type Variables, No. RR 11, 12 p. (1988)

Computer Science

Dwarf Cepheids:Periods

Scientific paper

The present paper dealing with the maxima of CY Aqr is essentially composed of two parts. The first part summarizes the results secured by GEOS observers from 1981 to 1984. A mean maximum is given for eych year. In the second part, these results are compared with all the observations published during the last 20 years. It appears that the period of CY Aqr has not noticeably changed during that interval. A linear regression applied to the observations of the past 20 years led to a new ephemeris, which is in good agreement with all results. Finally, the timing of the maxima of CY Aqr appears to be well within the reach of visual observers, provided that some care be taken in order to achieve a high degree of accuracy.

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