2021AJ....161..225L

Query : 2021AJ....161..225L

2021AJ....161..225L - Astron. J., 161, 225-225 (2021/May-0)

Search for magnetic accretion in SW Sextantis systems.

LIMA I.J., RODRIGUES C.V., FERREIRA LOPES C.E., SZKODY P., JABLONSKI F.J., OLIVEIRA A.S., SILVA K.M.G., BELLONI D., PALHARES M.S., SHUGAROV S., BAPTISTA R. and ALMEIDA L.A.

Abstract (from CDS):

SW Sextantis systems are nova-like cataclysmic variables that have unusual spectroscopic properties, which are thought to be caused by an accretion geometry having part of the mass flux trajectory out of the orbital plane. Accretion onto a magnetic white dwarf is one of the proposed scenarios for these systems. To verify this possibility, we analyzed photometric and polarimetric time-series data for a sample of six SW Sex stars. We report possible modulated circular polarization in BO Cet, SW Sex, and UU Aqr with periods of 11.1, 41.2, and 25.7 minutes, respectively, and less significant periodicities for V380 Oph at 22 minutes and V442 Oph at 19.4 minutes. We confirm previous results that LS Peg shows variable circular polarization. However, we determine a period of 18.8 minutes, which is different from the earlier reported value. We interpret these periods as the spin periods of the white dwarfs. Our polarimetric results indicate that 15% of the SW Sex systems have direct evidence of magnetic accretion. We also discuss SW Sex objects within the perspective of being magnetic systems, considering the latest findings about the demography, formation, and evolution of cataclysmic variables.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Cataclysmic variable stars - Nova-like variable stars - Magnetic variable stars - Polarimetry - Photometry

Simbad objects: 57

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Number of rows : 57
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* PX And CV* 00 30 05.8083597744 +26 17 26.437695936   15.38 14.88 14.69   ~ 117 0
2 V* FL Cet CV* 01 55 43.4035163686 +00 28 07.157350911   15.682 15.446 15.848   ~ 54 0
3 HD 12021 * 01 57 56.1374259408 -02 05 57.712014564   8.79 8.85     B8V 37 0
4 HD 12244 CV* 02 01 53.9158836029 +56 44 03.471610545           ~ 57 0
5 V* BO Cet CV* 02 06 39.2729397216 -02 03 42.590510064   14.447 14.341 14.478   ~ 28 0
6 V* TT Ari CV* 02 06 53.0797508832 +15 17 41.851038804   10.73 10.20     Bep: 441 0
7 HD 14069 * 02 16 45.1936420248 +07 41 10.637150532   9.21 9.06     A0 51 0
8 CRTS J022732.9+130617 CV* 02 27 32.8655528289 +13 06 17.082478063   19.7   17.2   ~ 9 0
9 V* WX Ari CV* 02 47 36.2217912312 +10 35 37.723782948   15.8       ~ 63 0
10 V* UU Col CV* 05 12 13.2335083440 -32 41 39.743719692   17.72       ~ 46 0
11 V* LS Cam CV* 05 57 23.9925592992 +72 41 52.428391188           ~ 20 0
12 V* V405 Aur CV* 05 57 59.2934496792 +53 53 44.926489464           ~ 131 0
13 V* V347 Pup CV* 06 10 33.6583947384 -48 44 25.363374036   13.95 13.57 13.24 12.79 M0.5V 96 0
14 V* AH Men CV* 06 11 44.605776 -81 49 23.29824 12.62 13.326 13.010 13.211   ~ 79 0
15 V* RR Pic No* 06 35 36.0630266144 -62 38 24.291214934   12.407 12.449 12.675 12.385 ~ 350 0
16 V* BT Mon No* 06 43 47.2416090432 -02 01 13.876883184   15.737 14.638 15.411   G8V 174 0
17 1RXS J064434.5+334451 CV* 06 44 34.3633514232 +33 44 56.611374792 13.11   13.56   12.8 ~ 20 0
18 V* V348 Pup CV* 07 12 32.9097229704 -36 05 38.582602080   15.82 15.72 16.00 15.06 B0V 89 0
19 V* PQ Gem CV* 07 51 17.3280306912 +14 44 23.874868716   14.415 14.162 13.945   ~ 227 0
20 HD 64299 * 07 52 25.5094475256 -23 17 46.749110748   10.27 10.11     A1V 36 0
21 V* EV Lyn CV* 07 54 43.0106636160 +50 07 29.095115196           ~ 12 0
22 2MASS J07565311+0858319 CV* 07 56 53.1135073704 +08 58 31.828977948           ~ 14 0
23 V* Z Cam CV* 08 25 13.1986690656 +73 06 39.284964108   12.006 11.927 11.712   ~ 525 0
24 V* SW Sex CV* 10 15 09.3769935988 -03 08 32.850732738           ~ 203 0
25 [HH95] SW Sex-2 * 10 15 18.0027114912 -03 07 20.935782444   13.839 13.194     ~ 3 0
26 V* DW UMa CV* 10 33 52.8751411128 +58 46 54.717259044   14.33   14.33 14.35 ~ 237 0
27 HD 94851 * 10 56 44.2560073776 -20 39 52.617699576   9.47 9.29     A5V 42 0
28 HD 98161 PM* 11 17 12.0072710256 -38 00 51.722245584   6.336 6.235     A1V 40 0
29 V* V1084 Cen LP* 11 26 12.2162024376 -51 21 38.315813724   11.30 9.747     K 8 0
30 V* V1025 Cen CV* 12 38 16.3191432264 -38 42 45.836441856   15.20       ~ 80 0
31 V* EX Hya CV* 12 52 24.2222471899 -29 14 55.999766523   13.51 13.49 13.55   M5-6V 694 0
32 V* RR Cha No* 13 26 23.8779745891 -82 19 43.428706487           ~ 42 0
33 V* OZ Dra CV* 13 27 23.3849161008 +65 28 54.313407696           ~ 15 0
34 V* UX UMa CV* 13 36 40.9531256400 +51 54 49.423353228   12.78 13.26     sdOB 528 0
35 2MASS J15092601-6649232 CV* 15 09 26.0168351808 -66 49 23.279486268           ~ 46 0
36 V* LX Ser CV* 15 38 00.0938074584 +18 52 03.244681812     15.06     G8Ve 150 0
37 V* NY Lup XB* 15 48 14.5961462732 -45 28 39.918849218       14.544   K0/3Ve 102 0
38 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 483 0
39 V* V1084 Her CV* 16 43 45.6974063496 +34 02 39.549009444     12.48     ~ 39 0
40 HD 154892 PM* 17 07 41.3074574064 +15 12 37.612625076   8.36 7.88     F8V 54 0
41 V* V795 Her CV* 17 12 56.1689188488 +33 31 19.240640724   12.53 12.64 12.69   ~ 183 0
42 V* V442 Oph CV* 17 32 15.1362474864 -16 15 22.068343152       14.120   ~ 89 0
43 [HH95] V442 Oph-20 * 17 32 23.3389186536 -16 16 21.353453184   16.104 14.134     ~ 2 0
44 [HH95] V380 Oph-13 * 17 50 07.14 +06 05 13.8   14.614 13.900     ~ 2 0
45 V* V380 Oph CV* 17 50 13.6259504232 +06 05 29.236175016   15.146 14.927 14.752   ~ 50 0
46 V* DQ Her CV* 18 07 30.2510391864 +45 51 32.564791872   14.605 14.443 14.800   M3+Ve 1012 1
47 V* V533 Her No* 18 14 20.4844831200 +41 51 22.069747872           ~ 255 0
48 V* WY Sge CV* 19 32 43.8695242507 +17 44 54.514771236           ~ 87 0
49 CD-30 17706 WD* 20 10 56.8486912016 -30 13 06.627142663 11.654 12.286 12.242 12.311 12.381 DA3.1 249 0
50 2XMM J210131.2+105251 CV* 21 01 31.2603247008 +10 52 51.554742924           ~ 9 0
51 TYC 1134-178-1 * 21 51 55.9866991176 +14 08 18.513559428   12.29 10.66     ~ 2 0
52 V* LS Peg CV* 21 51 57.9373184400 +14 06 53.271115344   11.886 11.800 12.4   ~ 90 0
53 [HH95] UU Aqr-5 * 22 09 04.9252925136 -03 46 42.199578840   15.047 13.804     ~ 2 0
54 V* UU Aqr CV* 22 09 05.7613016472 -03 46 17.688853416   13.998 13.919 13.735   ~ 138 0
55 V* FO Aqr CV* 22 17 55.3796835600 -08 21 03.754995948           ~ 362 0
56 V* AO Psc CV* 22 55 17.9860863984 -03 10 39.981831564           ~ 310 0
57 V* VZ Scl CV* 23 50 09.2550871008 -26 22 52.701610656           ~ 79 0

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