2020MNRAS.492.4298K

Query : 2020MNRAS.492.4298K

2020MNRAS.492.4298K - Mon. Not. R. Astron. Soc., 492, 4298-4312 (2020/March-1)

A spectroscopic, photometric, polarimetric, and radio study of the eclipsing polar UZ Fornacis: the first simultaneous SALT and MeerKAT observations.

KHANGALE Z.N., POTTER S.B., WOUDT P.A., BUCKLEY D.A.H., SEMENA A.N., KOTZE E.J., GROENEWALD D.N., HEWITT D.M., PRETORIUS M.L., FENDER R.P., GROOT P., BLOEMEN S., KLEIN-WOLT M., KORDING E., LE POOLE R., McBRIDE V.A., TOWNSEND L., PATERSON K., PIETERSE D.L.A. and VREESWIJK P.

Abstract (from CDS):

We present phase-resolved spectroscopy, photometry, and circular spectropolarimetry of the eclipsing polar UZ Fornacis. Doppler tomography of the strongest emission lines using the inside-out projection revealed the presence of three emission regions: from the irradiated face of the secondary star, the ballistic stream and the threading region, and the magnetically confined accretion stream. The total intensity spectrum shows broad emission features and a continuum that rises in the blue. The circularly polarized spectrum shows the presence of three cyclotron emission harmonics at ∼4500, 6000, and 7700 Å, corresponding to harmonic numbers 4, 3, and 2, respectively. These features are dominant before the eclipse and disappear after the eclipse. The harmonics are consistent with a magnetic field strength of ∼57 MG. We also present phase-resolved circular and linear photopolarimetry to complement the spectropolarimetry around the times of eclipse. MeerKAT radio observations show a faint source that has a peak flux density of 30.7 ± 5.4 µJy beam-1 at 1.28 GHz at the position of UZ For.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion - accretion discs - binaries: close - stars: individual: UZ For - stars: magnetic fields - novae - cataclysmic variables - white dwarfs

Simbad objects: 27

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Number of rows : 27
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* BL Hyi CV* 01 41 00.3996430344 -67 53 27.470100660       15.340   DC: 221 0
2 CPD-69 177 WD* 03 10 31.0195960176 -68 36 03.380768388 10.757 11.413 11.394 11.47 11.558 DA3.0 299 0
3 V* UZ For CV* 03 35 28.6518733656 -25 44 21.768755424           M4.5 279 0
4 ICRF J040820.3-654509 Sy2 04 08 20.37884 -65 45 09.0806     18.0     ~ 207 1
5 QSO B0406-180 QSO 04 09 06.6760356072 -17 57 10.228755816     19.0     ~ 37 1
6 V* BY Cam CV* 05 42 48.8013535344 +60 51 31.376128608   16.60       ~ 270 0
7 HD 289002 * 06 45 13.3725491952 +02 08 14.685250596 10.06 10.62 10.44     B1 277 0
8 RX J0649.8-0737 CV* 06 49 50.9207017944 -07 37 40.887051888           ~ 15 0
9 V* BG CMi CV* 07 31 29.0079060264 +09 56 23.030740248   14.5       ~ 246 0
10 RX J0749.1-0549 CV* 07 49 10.4003645400 -05 49 25.457634912           ~ 14 0
11 V* VV Pup CV* 08 15 06.8009599464 -19 03 17.765706024     13.90     M7V 413 0
12 RX J0859.1+0537 CV* 08 59 09.1821682632 +05 36 54.593762148   17.9 17     ~ 28 0
13 RX J1007.5-2017 CV* 10 07 34.6526107392 -20 17 32.451317412     18.0     ~ 33 0
14 V* WX LMi CV* 10 26 27.4933431861 +38 45 02.655728034   18   16.77   M5.0 56 0
15 V* ST LMi CV* 11 05 39.7664319408 +25 06 28.746723096   16.832 16.524 15.639   DAH+M 228 0
16 V* AR UMa CV* 11 15 44.5891034908 +42 58 22.431026739     16.4     O9I 154 0
17 V* DP Leo CV* 11 17 15.9239894616 +17 57 41.690453220           ~ 237 1
18 LAWD 37 WD* 11 45 42.9169346379 -64 50 29.461957832 11.08 11.725 11.513 11.34 11.163 DQ 287 0
19 MASTER OT J132104.04+560957.8 CV* 13 21 04.0096260336 +56 09 58.016570472           ~ 24 0
20 V* V834 Cen CV* 14 09 07.2863511816 -45 17 16.023776676       15.301   M6.5 333 0
21 V* AP CrB CV* 15 54 12.3454476576 +27 21 52.290975024     16.87 16.5   M3 47 0
22 V* V884 Her CV* 18 02 06.4848200016 +18 04 43.839425568   13.315 13.382 14.753   ~ 63 0
23 V* DQ Her CV* 18 07 30.2510391864 +45 51 32.564791872   14.605 14.443 14.800   M3+Ve 1048 1
24 V* AM Her CV* 18 16 13.2546725104 +49 52 04.759613537   15.124 14.808 13.525   M4.5-5Ve 1009 2
25 V* AE Aqr CV* 20 40 09.1598959176 -00 52 15.055595220   12.46 10.40   10.191 K3-5IV/V 705 0
26 V* HU Aqr CV* 21 07 58.1944529400 -05 17 40.557671916   16.198 15.814 14.891   D+M4V 292 1
27 V* V1500 Cyg No* 21 11 36.5809818696 +48 09 01.952490204           ~ 820 0

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