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Eclipsing binaries with eccentric orbits Waldemar Ogłoza www.as.up.krakow.pl.

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Presentation on theme: "Eclipsing binaries with eccentric orbits Waldemar Ogłoza www.as.up.krakow.pl."— Presentation transcript:

1 Eclipsing binaries with eccentric orbits Waldemar Ogłoza

2 4 source of information:

3 C = M O + P  E M O – time of referenced eclipse P – period E - epoch

4 O-C

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6 Period variations diven by: Mass transfer Mass ejection 3 body Apsidal motion Magnetic braking Emission of gravitational waves …

7 Diagram O-C

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10 e=0.5

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12 Gravitational breaking

13 Magnietic breaking

14 Orbital circularisation and synchronization * radiative

15 * convective:

16 Pri:  =  /2 -  Sec:  =3  /2 -  - True anomaly - Mean anomaly  = 2  (t-t o ) /P

17 Case: i  90

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20 Why d  /dt  ≠ 0

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29 Links


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