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Astron. Astrophys. 352, 239-247 (1999)

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5. Conclusions

  • The light curve of RZ Leo during a time interval of 11-years is characterized by highly variable humps.

  • A non-coherent photometric period of [FORMULA] is consistent with the data.

  • The hump amplitude is anti-correlated with the stellar mean brightness.

  • A new phenomenon was reported: the presence of "anti-humps" when the system is faint.

  • Anti-humps might result from a regime of very low mass transfer rate and normal alpha disks.

  • Non-coherent humps are compatible with a non-steady hot spot.

  • The rapid response of the accretion disk to the enhanced mass transfer rate evidenced by the phenomena of early 1998 (Fig. 9) suggests a disk with a normal viscosity parameter [FORMULA] [FORMULA] 0.08.

  • The possibility of an undermassive secondary is rejected by arguments concerning the observed optical and infrared flux distribution.

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© European Southern Observatory (ESO) 1999

Online publication: November 23, 1999