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- Centre National de la Recherche ScientifiqueFR339 papers
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21 papers · 1 filter
Multi-epoch Doppler tomography and polarimetry of QQ Vul
A. D. Schwope, Maria S. Catalan, Klaus Beuermann +3
(abridged abstract) We present multi-epoch high-resolution spectroscopy and photoelectric polarimetry of the long-period polar (AM Herculis star) QQ Vul. The blue emission lines sh…
Post nova white dwarf cooling in V1500 Cygni
M. W. Somers, T. Naylor
We use the irradiated secondary star in the remnant of Nova Cyg 1975 as a probe of the cooling white dwarf. At superior conjunction the flux in the B band is dominated by the irrad…
Chaotic Properties of Subshifts Generated by a Non-Periodic Recurrent Orbit
Xin-Chu Fu, Yibin Fu, Jinqiao Duan +1
The chaotic properties of some subshift maps are investigated. These subshifts are the orbit closures of certain non-periodic recurrent points of a shift map. We first provide a re…
NICMOS and VLA Observations of the Gravitatonally Lensed Ultraluminous BAL Quasar APM~08279+5255: Detection of a Third Image
Rodrigo A. Ibata, Geraint F. Lewis, Michael J. Irwin +2
We present a suite of observations of the recently identified ultraluminous BAL quasar APM 08279+5255, taken both in the infra-red with the NICMOS high resolution camera on board t…
Lithium depletion in open clusters
R. D. Jeffries
The current status of observational studies of lithium depletion in open clusters is reviewed, concentrating mainly on G and K type stars. I attempt to answer the following questio…
A Spatially Resolved `Inside-out' Outburst of IP Pegasi
N. A. Webb, T. Naylor, Z. Ioannou +6
We present a comprehensive photometric dataset taken over the entire outburst of the eclipsing dwarf nova IP Peg in September/October 1997. Analysis of the lightcurves taken over t…