2022ApJ...928..164C

Query : 2022ApJ...928..164C

2022ApJ...928..164C - Astrophys. J., 928, 164-164 (2022/April-1)

Investigating the Low-flux States in Six Intermediate Polars.

COVINGTON A.E., SHAW A.W., MUKAI K., LITTLEFIELD C., HEINKE C.O., PLOTKIN R.M., BARRETT D., BOARDMAN J., BOYD D., BRINCAT S.M., CARSTENS R., COLLINS D.F., COOK L.M., COONEY W.R., CEJUDO FERNANDEZ D., DUFOER S., DVORAK S., GALDIES C., GOFF W., HAMBSCH F.-J., JOHNSTON S., JONES J., MENZIES K., MONARD L.A.G., MORELLE E., NELSON P., OGMEN Y., ROCK J.W., SABO R., SEARGEANT J., STONE G., ULOWETZ J. and VANMUNSTER T.

Abstract (from CDS):

We present optical photometry of six intermediate polars that exhibit transitions to a low-flux state. For four of these systems, DW Cnc, V515 And, V1223 Sgr, and RX J2133.7+5107, we are able to perform timing analysis in and out of the low states. We find that, for DW Cnc and V515 And, the dominant periodicities in the light curves change as the flux decreases, indicating a change in the sources' accretion properties as they transition to the low state. For V1223 Sgr, we find that the variability is almost completely quenched at the lowest flux, but we do not find evidence for a changing accretion geometry. For RX J2133.7+5107, the temporal properties do not change in the low state, but we do see a period of enhanced accretion that is coincident with increased variability on the beat frequency, which we do not associate with a change in the accretion mechanisms in the system.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Cataclysmic variable stars - DQ Herculis stars - Accretion - White dwarf stars - Stellar accretion disks

Simbad objects: 19

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Number of rows : 19
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* V515 And CV* 00 55 19.8532324488 +46 12 56.987432856           ~ 59 0
2 V* V1062 Tau CV* 05 02 27.4778229096 +24 45 23.157957240   17.159 16.717 16.319   ~ 85 0
3 V* TW Pic CV* 05 34 50.5861498896 -58 01 40.765120788 13.84 14.83 15.10     ~ 107 2
4 V* TX Col CV* 05 43 20.16864 -41 01 54.2856         14.541 ~ 167 0
5 SWIFT J0746.2-1611 CV* 07 46 17.1148913952 -16 11 27.682837656   15.020 14.469 14.830   ~ 23 0
6 V* DW Cnc CV* 07 58 53.0399000904 +16 16 45.169158720           ~ 85 0
7 V* YY Dra EB* 11 43 35 +71 42.2           ~ 41 1
8 V* DO Dra CV* 11 43 38.4921265896 +71 41 20.559036192       13.747   DQ 233 1
9 V* V1025 Cen CV* 12 38 16.3191432264 -38 42 45.836441856   15.20       ~ 90 0
10 V* V1205 Cen Mi* 14 16 40.7329579320 -36 56 17.923070868   13.08 11.43 10.18   ~ 6 0
11 V* V2400 Oph CV* 17 12 36.4233668016 -24 14 44.773987164     14.5     ~ 169 0
12 V* V1323 Her CV* 18 03 39.6647033976 +40 12 20.266898184   17.3   17.2   ~ 32 0
13 SWIFT J183221.5-162724 * 18 32 21.5629981591 -16 27 24.245005329           ~ 6 0
14 V* V1223 Sgr CV* 18 55 02.3108012664 -31 09 49.584656268           ~ 347 0
15 V* MV Lyr CV* 19 07 16.2886463256 +44 01 07.869892008   13.040 12.920 12.489 12.578 M5Ve 307 0
16 1RXS J211336.1+542226 CV* 21 13 35.3828742552 +54 22 32.940457932   19.8 18.3 18.8   ~ 21 0
17 RX J2133.7+5107 CV* 21 33 43.6348450728 +51 07 24.729535560   15.80       ~ 89 0
18 V* FO Aqr CV* 22 17 55.3796835600 -08 21 03.754995948   13.533 13.445 13.414   ~ 378 0
19 V* AO Psc CV* 22 55 17.9860863984 -03 10 39.981831564           ~ 327 0

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