Period changes in CY Aquarii

Details Period changes in CY Aquarii Period changes in CY Aquarii

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...168..125r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 168, no. 1-2, Nov. 1986, p. 125-129. Research supported by the Ministerio de A

Astronomy and Astrophysics

Astrophysics

12

Ephemerides, Radiant Flux Density, Stellar Mass, Stellar Models, Stellar Oscillations, Variable Stars, Orbital Mechanics, Periodic Variations, Stellar Spectrophotometry

Scientific paper

New photometric observations obtained in 1982 and 1983, and previous observations, covering a period of 53 years, are used to derive accurate maxima for CY Aqr. Results establish a monotonic decrement of the period of pulsation and an ephemeris for the times of maxima given by 2440892.637 + 0.061038318E - 4.58 x 10 to the -13th E squared. The period at any time is given by 0.061038318 - 9.16 x 10 to the 13th E, and the parameters of CY Aqr are explained by models of low mass (0.2 solar masses).

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