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| Paper: |
New Systems Showing the Light-Time Effect |
| Volume: |
349, Astrophysics of Variable Stars |
| Page: |
379 |
| Authors: |
Zasche, P. |
| Abstract: |
Two Algol-type eclipsing binary systems (EW Lyr and IV Cas) have been investigated for period changes. Our study was primarily focused on the light-time effect with an alternative explanation by magnetic activity cycles. In the case of EW Lyr we have found a third body in the orbit with a period of about 78 years, an amplitude A = 0.052 days and orbital eccentricity e = 0.57. For IV Cas the long period is 58 years, amplitude A = 0.034 days and zero eccentricity. With these results we are also able to calculate mass functions and minimal masses of these components. |
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