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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
First science with the Southern African Large Telescope: Peering at the accreting polar caps of the eclipsing polar SDSS J015543.40+002807.2
Monthly Notices of the Royal Astronomical Society, Volume 372, No. 1, Year 2006
Notification
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Description
We describe briefly the properties of the recently completed Southern African Large Telescope (SALT), along with its first light imager SALTICAM. Using this instrument, we present 4.3 h of high-speed unfiltered photometric observations of the eclipsing polar SDSS J015543.40+002807.2 with time-resolution as short as 112 ms, the highest-quality observations of this kind of any polar to date. The system was observed during its high-luminosity state. Two accreting poles are clearly seen in the eclipse light curve. The binary system parameters have been constrained: the white dwarf mass is at the low end of the range expected for cataclysmic variables. Correlations between the positions of the accretion regions on or near the surface of the white dwarf and the binary system parameters were established. The sizes of the accretion regions and their relative movement from eclipse to eclipse were estimated: they are typically 4°-7° depending on the mass of the white dwarf. The potential of these observations will only fully be realized when low-state data of the same kind are obtained and the contact phases of the eclipse of the white dwarf are measured. © 2006 RAS.
Authors & Co-Authors
O'Donoghue, Darragh E.
South Africa, Cape Town
South African Astronomical Observatory
Buckley, David A.H.
South Africa, Cape Town
South African Astronomical Observatory
South Africa, Cape Town
Southern African Large Telescope Foundation
Balona, Luis A.
South Africa, Cape Town
South African Astronomical Observatory
Bester, D.
South Africa, Cape Town
Southern African Large Telescope Foundation
Botha, L.
South Africa, Cape Town
South African Astronomical Observatory
Brink, Janus D.
South Africa, Cape Town
South African Astronomical Observatory
South Africa, Cape Town
Southern African Large Telescope Foundation
Carter, D. C.
South Africa, Cape Town
South African Astronomical Observatory
Charles, Philip A.
South Africa, Cape Town
South African Astronomical Observatory
Christians, A.
South Africa, Cape Town
South African Astronomical Observatory
Ebrahim, F.
South Africa, Cape Town
South African Astronomical Observatory
South Africa, Cape Town
Southern African Large Telescope Foundation
Emmerich, R.
South Africa, Cape Town
South African Astronomical Observatory
South Africa, Cape Town
Southern African Large Telescope Foundation
Esterhuyse, W.
South Africa, Cape Town
Southern African Large Telescope Foundation
Evans, G. P.
South Africa, Cape Town
South African Astronomical Observatory
Fourie, Christoffel J.S.
South Africa, Cape Town
South African Astronomical Observatory
Fourie, Piet A.
South Africa, Cape Town
South African Astronomical Observatory
Gajjar, Hitesh
South Africa, Cape Town
South African Astronomical Observatory
South Africa, Cape Town
Southern African Large Telescope Foundation
Gordon, M.
South Africa, Cape Town
South African Astronomical Observatory
Gumede, C.
South Africa, Cape Town
Southern African Large Telescope Foundation
De Kock, M.
South Africa, Cape Town
Southern African Large Telescope Foundation
Koeslag, A.
South Africa, Cape Town
Southern African Large Telescope Foundation
Koorts, W. P.
South Africa, Cape Town
South African Astronomical Observatory
Kriel, H.
South Africa, Cape Town
South African Astronomical Observatory
Marang, Freddy
South Africa, Cape Town
South African Astronomical Observatory
Meiring, J. G.
South Africa, Cape Town
Southern African Large Telescope Foundation
Menzies, John W.
South Africa, Cape Town
South African Astronomical Observatory
Menzies, P.
South Africa, Cape Town
South African Astronomical Observatory
Metcalfe, D.
South Africa, Cape Town
South African Astronomical Observatory
Meyer, B.
South Africa, Cape Town
South African Astronomical Observatory
Nel, L.
South Africa, Cape Town
Southern African Large Telescope Foundation
O'Connor, J.
South Africa, Cape Town
South African Astronomical Observatory
Osman, F.
South Africa, Cape Town
South African Astronomical Observatory
Du Plessis, C.
South Africa, Cape Town
South African Astronomical Observatory
Rail, H.
South Africa, Cape Town
South African Astronomical Observatory
Riddick, A.
South Africa, Cape Town
South African Astronomical Observatory
Romero-Colmenero, Encarnacion
South Africa, Cape Town
South African Astronomical Observatory
Potter, Stephen B.
South Africa, Cape Town
South African Astronomical Observatory
Sass, C.
South Africa, Cape Town
South African Astronomical Observatory
Schalekamp, Henk J.
South Africa, Cape Town
Southern African Large Telescope Foundation
Sessions, N.
South Africa, Cape Town
Southern African Large Telescope Foundation
Siyengo, S.
South Africa, Cape Town
South African Astronomical Observatory
Sopela, V.
South Africa, Cape Town
South African Astronomical Observatory
Steyn, H.
South Africa, Cape Town
South African Astronomical Observatory
Stoffels, J.
South Africa, Cape Town
South African Astronomical Observatory
Scholtz, J.
South Africa, Cape Town
South African Astronomical Observatory
Swart, G.
South Africa, Cape Town
Southern African Large Telescope Foundation
Swat, A.
South Africa, Cape Town
Southern African Large Telescope Foundation
Swiegers, J.
South Africa, Cape Town
Southern African Large Telescope Foundation
Tiheli, T.
South Africa, Cape Town
South African Astronomical Observatory
Väisänen, Petri S.M.
South Africa, Cape Town
South African Astronomical Observatory
Whittaker, W.
South Africa, Cape Town
Southern African Large Telescope Foundation
van Wyk, François G.
South Africa, Cape Town
South African Astronomical Observatory
Statistics
Citations: 89
Authors: 51
Affiliations: 2
Identifiers
Doi:
10.1111/j.1365-2966.2006.10834.x
ISSN:
00358711
e-ISSN:
13652966