Post-Outburst Accretion Resumption in RS Ophiuchi

H. L. Worters, Stewart Eyres, G. E. Bromage, J. P. Osborne

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddCyfraniad i gynhadleddadolygiad gan gymheiriaid

Crynodeb

The latest outburst of the recurrent nova RS Oph occurred in 2006 February. Photometric data presented here show evidence of the resumption of optical flickering, indicating re-establishment of accretion by day 241 of the outburst. Magnitude variations of up to 0.32 mag in the V-band and 0.14 mag in B on time-scales of 600-7000 s are detected. Over the two week observational period we also detect a 0.5 mag decline in the mean brightness, from V ≈ 11.4 to V ≈ 11.9, and record B ≈ 12.9 mag. Limits on the mass accretion rate of ∼ 10−10 ≤ dM/dtacc ≤ 10−9M⊙yr−1 are calculated, which span the range of accretion rates modelled for direct wind accretion and Roche lobe overflow mechanisms. The current accretion rate presents difficulties in explaining the observed recurrence interval by thermonuclear runaway, implying low average accretion rates immediately post–outburst.
Iaith wreiddiolSaesneg
TeitlRS Ophiuchi (2006) and the Recurrent Nova Phenomenon
Is-deitlAstronomical Society of the Pacific Conference Series
GolygyddionA. Evans, M. Bode, T. J. O'Brien, M. J. Darnley
CyhoeddwrAstronomical Society of the Pacific
Tudalennau223
Cyfrol401
ISBN (Electronig)978-1-58381-675-2
ISBN (Argraffiad)978-1-58381-674-5
StatwsCyhoeddwyd - Rhag 2008
DigwyddiadRS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON: Proceedings of a workshop held at Keele University, 12-14 June 2007 - Keele University, Keele, Y Deyrnas Unedig
Hyd: 12 Jun 200714 Jun 2007

Gweithdy

GweithdyRS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON
Gwlad/TiriogaethY Deyrnas Unedig
DinasKeele
Cyfnod12/06/0714/06/07

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