Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/112222
Title: Detection of Superhumps in the VY Scl-type Nova-Like Variable KR Aur
Authors: Kozhevnikov, V. P.
Issue Date: 2007
Publisher: Oxford University Press (OUP)
Citation: Kozhevnikov V. P. Detection of Superhumps in the VY Scl-type Nova-Like Variable KR Aur / V. P. Kozhevnikov // Monthly Notices of the Royal Astronomical Society. — 2007. — Vol. 378. — Iss. 3. — P. 955-960.
Abstract: We report on the detection of negative superhumps in KR Aur, a typical VY Scl star. The observations were obtained with a multi-channel photometer over 107 h. The analysis of the data clearly revealed brightness variations with a period of 3.771 (±0.005) h. This is 3.5 per cent shorter than Porb, suggesting that the observed oscillation is a negative superhump. Negative superhumps in VY Scl stars are widespread. The discovery of powerful soft X-rays from V751 Cyg suggests that VY Scl stars may contain white dwarfs, on to which nuclear burning of the accreted material occurs. If this suspicion is correct, it is possible that the powerful radiation emerging from the white dwarf may cause a tilt of the accretion disc to the orbital plane, and its retrograde precession may produce the negative superhumps seen in VY Scl stars. © 2007 The Author. Journal compilation © 2007 RAS.
Keywords: NOVAE, CATACLYSMIC VARIABLES
STARS: INDIVIDUAL: KR AUR
STARS: OSCILLATIONS
URI: http://hdl.handle.net/10995/112222
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 34250687389
ISSN: 0035-8711
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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