2002MNRAS.333..411W

Query : 2002MNRAS.333..411W

2002MNRAS.333..411W - Mon. Not. R. Astron. Soc., 333, 411-422 (2002/June-3)

Dwarf nova oscillations and quasi-periodic oscillations in cataclysmic variables - I. Observations of VW Hyi.

WOUDT P.A. and WARNER B.

Abstract (from CDS):

From archived and recent high-speed photometry of VW Hyi we find dwarf nova oscillations (DNOs) occasionally present throughout outburst, evolving from a 14.06-s period at maximum to >40s near the end of outburst. A relatively slow increase of period is followed by a rapid increase and a subsequent decrease.

Quasi-periodic oscillations (QPOs) are seen at periods of hundreds of seconds. For the first time, the evolution of a QPO period is seen, increasing steadily during the final decline of an outburst. The occasional presence of two DNOs, separated in frequency by the QPO frequency, suggests reprocessing of the rotating DNO beam by a `wall' rotating progradely in the disc at the QPO period.


Abstract Copyright: 2002 Blackwell Science Ltd

Journal keyword(s): accretion, accretion discs - stars: dwarf novae - stars: individual: VW Hyi - novae, cataclysmic variables - stars: oscillations

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* HT Cas CV* 01 10 13.1213394144 +60 04 35.489642700     14.10     M5.5e 401 0
2 V* KT Per CV* 01 37 08.7946635024 +50 57 20.398380408   13.999 13.819 12.290   M3.5e 131 0
3 V* VW Hyi CV* 04 09 11.3967378648 -71 17 41.554528260   12.786 12.543 14.160   DQ 661 0
4 V* CN Ori CV* 05 52 07.7842206216 -05 25 00.543695772           ~ 184 0
5 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1135 0
6 V* SU UMa CV* 08 12 28.2695986944 +62 36 22.427676396           B2 516 0
7 V* Z Cam CV* 08 25 13.1986690656 +73 06 39.284964108   12.006 11.927 11.712   ~ 554 0
8 V* OY Car CV* 10 06 22.0793274312 -70 14 04.584660540           ~ 586 0
9 V* RW Sex CV* 10 19 56.6224471752 -08 41 56.106711816   10.674 10.645 10.747 10.598 DAe 216 0
10 V* T Crv Mi* 12 37 06.9073806552 -17 31 32.002593492       9.825   M6 27 0
11 V* UX UMa CV* 13 36 40.9531256400 +51 54 49.423353228   12.78 13.26     sdOB 556 0
12 V* V2051 Oph CV* 17 08 19.0873634976 -25 48 31.704262776   17.5       ~ 252 0
13 CD-42 14462 CV* 19 47 40.5290567472 -42 00 26.395115580 9.65 10.362 10.308 10.520   sdB 243 0
14 V* AB Dra CV* 19 49 06.5315089272 +77 44 23.339250276   15.209 14.928 14.097   ~ 124 0
15 V* WZ Sge CV* 20 07 36.5037622512 +17 42 14.733254952   15.30 15.20 10.817   D 982 0
16 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1324 1
17 V* HL Aqr CV* 22 20 26.9273134056 +02 00 53.375434236   13.45       ~ 59 0
18 V* TY PsA CV* 22 49 39.9054462120 -27 06 53.126335980   15.61 15.67 16.19   DA 105 0

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