SIMBAD references

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

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2020MNRAS.492.4298K and select 'bookmark this link' or equivalent in the popup menu


2021.03.05-21:23:51

© Université de Strasbourg/CNRS

    • Contact