TL;DR
This paper estimates the mass transfer rate in SS Cyg during quiescence and outburst, finding it below critical thresholds during quiescence and significantly increased during outbursts, informing accretion disk stability.
Contribution
It provides a new estimate of the mass transfer rate in SS Cyg during quiescence based on hot spot luminosity, and compares it to critical rates for disk stability.
Findings
Mass transfer rate during quiescence is logṀ_tr=16.8±0.3.
Rate during outbursts is strongly enhanced.
Quiescent rate is below critical thresholds for disk stability.
Abstract
The mass transfer rate in SS Cyg at quiescence, estimated from the observed luminosity of the hot spot, is log\dotM_tr=16.8+/-0.3. This is safely below the critical mass transfer rates of log\dotM_crit=18.1 (corresponding to logT^o_crit=3.88) or log\dotM_crit=17.2 (corresponding to the "revised value of logT^o_crit=3.65). The mass transfer rate during outbursts is strongly enhanced.
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Taxonomy
TopicsAstrophysical Phenomena and Observations · High-Energy Particle Collisions Research · Superconducting Materials and Applications