Orbital Solutions and Absolute Elements of the Eclipsing Binary EE Aquarii
Sowell, James R.; Wronka, Marissa Diehl; Gold, Caitlin; Williamon, Richard M.
United States
Abstract
EE Aqr is a 7.9 mag Algol variable with a 12 hr orbital period. The Wilson-Devinney program is used to simultaneously solve 11 previously published light curves together with two existing radial velocity curves. The resulting masses are M 1 = 2.24 ± 0.13 M sun and M 2 = 0.72 ± 0.04 M sun, and the radii are R 1 = 1.76 ± 0.03 R sun and R 2 = 1.10 ± 0.02 R sun. The system has the lower-mass component completely filling its Roche lobe. Its distance from Hipparcos observations is 112 ± 10 pc. An improved ephemeris is derived, and no deviations in the period over time were seen. Light and velocity curve parameters, orbital elements, and absolute dimensions are presented, plus a comparison is made with previous solutions.