Accretion Events in Binary Systems: AZ Cas and VV Cep
C. Ga{\l}an, M. Miko{\l}ajewski, T. Tomov, M. Wi\c{e}cek, A. Majcher,, P. Wychudzki, E. \'Swierczy\'nski, D. Kolev, T. Bro\.zek, G. Maciejewski, S., Zo{\l}a, M. Kurpi\'nska-Winiarska, M. Winiarski, W. Og{\l}oza, M. Dro\.zd\.z,, J. Krzesi\'nski
TL;DR
This paper investigates accretion events in binary systems, focusing on VV Cep's orbital period increase and potential mass transfer in AZ Cas, highlighting the significance of accretion processes in such systems.
Contribution
It presents observational evidence of orbital period change in VV Cep and discusses the potential for accretion in AZ Cas, emphasizing the role of mass transfer in binary evolution.
Findings
VV Cep's orbital period increased by about 1%
Evidence suggests mass transfer or loss in VV Cep
Potential accretion activity in AZ Cas
Abstract
The sudden lengthening of orbital period of VV Cep eclipsing binary by about 1% was observed in the last epoch. The mass transfer and/or mass loss are most possible explanations of this event. The photometric behaviour of AZ Cas, the cousin of VV Cep, suggests that the accretion can occur and could be important in this system, too.
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Taxonomy
TopicsNuclear Physics and Applications