White dwarf mass growth in cataclysmic variables: roles of dwarf novae

ABSTRACT The disc instability mechanism (DIM) is widely accepted to account for the transient behaviour of dwarf novae (DNe), which experience short outbursts separated by long quiescence. duty cycle (the ratio between outburst duration and recurrence time) determines amount accreted mass white (WDs) during outbursts, thus playing an important role in long-term binary evolution. Employing code Modules Experiments Stellar Astrophysics, we systemically investigate influence cycles on evolution DNe growth accreting carbon-oxygen (CO) WDs. Our calculations show that, while DIM can considerably accretion process, efficient WD-mass requires a particular range cycle. For WDs with initial masses 0.6, 0.7, 1.1 M⊙, these are 0.006$\, \le$d$\, \le$0.007, d = 0.005, and, 0.003 accumulated reach 0.1, 0.13, 0.21 respectively. In all our simulations, no CO grow their explosion Type Ia supernovae about 1.38 M⊙. Because much time-scale state, final donor-star orbital periods insensitive cycles. Therefore, propose that could alleviate WD problem some extent.