The Open UniversitySkip to content

Late superhumps and the stream–disc impact in IY UMa

Rolfe, Daniel J.; Haswell, Carole A. and Patterson, Joseph (2001). Late superhumps and the stream–disc impact in IY UMa. Monthly Notices of the Royal Astronomical Society, 324(3) pp. 529–536.

DOI (Digital Object Identifier) Link:
Google Scholar: Look up in Google Scholar


We use the hotspot eclipse times of the newly discovered deeply eclipsing dwarf nova IY UMa to trace out the shape of its disc during the late superhump era. We find an eccentric disc. We show that the brightness of the stream–disc impact region varies as expected with |ΔV|2, where ΔV is the relative velocity of the stream with respect to the velocity of the disc at the impact point. We conclude that the hotspot is the source of late superhump light.

Item Type: Journal Article
ISSN: 1365-2966
Keywords: accretion; accretion discs; binaries: close; binaries: eclipsing; stars: dwarf novae; stars: individual: IY UMa; novae cataclysmic variables
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 4248
Depositing User: Users 6827 not found.
Date Deposited: 04 Jul 2006
Last Modified: 14 Jan 2016 16:00
Share this page:


Scopus Citations

▼ Automated document suggestions from open access sources

Actions (login may be required)

Policies | Disclaimer

© The Open University   + 44 (0)870 333 4340