Skip to main content
Article thumbnail
Location of Repository

The stunted outbursts of UU Aquarii are likely mass-transfer events

By R. Baptista, A. Bortoletto and R. K. Honeycutt


We report a time-lapse eclipse mapping analysis of B-band time-series of the nova-like variable UU Aqr along a typical stunted outburst in 2002 August. Disc asymmetries rotating in the prograde sense in the eclipse maps are interpreted as a precessing elliptical disc with enhanced emission at periastron. From the disc expansion velocity a disc viscosity alpha_{hot}= 0.2 is inferred. The outburst starts with a 10-fold increase in uneclipsed light, probably arising in an enhanced disc wind; the disc response is delayed by 2 d. The results are inconsistent with the disc instability model and suggest that the stunted outburst of UU Aqr are the response of its viscous accretion disc to enhanced mass-transfer events.Comment: 4 pages, 2 postscript figures. To appear in the proceedings of "The Physics of Accreting Compact Binaries", Universal Academy Press In

Topics: Astrophysics - Solar and Stellar Astrophysics
Year: 2011
OAI identifier:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • (external link)
  • Suggested articles

    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.