194 citations · 984 across the 87 of their papers we have counts for
10 papers · 1 filter
The first confirmed superoutburst of the SU UMa type dwarf nova SDSS J083931.35+282824.0
Jeremy Shears, Enrique de Miguel, George Roberts +3
We report unfiltered CCD photometry of the first confirmed superoutburst of the recently discovered dwarf nova, SDSS J083931.35+282824.0 in April 2010. From a quiescence magnitude…
The orbital and superhump periods of the dwarf nova HS 0417+7445 in Camelopardalis
J. H. Shears, B. T. Gaensicke, S. Brady +3
We present the 2005-2010 outburst history of the SUUMa-type dwarf HS 0417+7445,along with a detailed analysis of extensive time-series photometry obtained in March 2008 during the…
Felix de Roy: a life of variable stars
Jeremy Shears
Felix de Roy (1883-1942), an internationality recognised amateur astronomer, made significant contributions to variable star research. As an active observer, he made some 91,000 vi…
Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. II: The Second Year (2009-2010)
Taichi Kato, Hiroyuki Maehara, Makoto Uemura +56
As an extension of the project in Kato et al. (2009, arXiv:0905.1757), we collected times of superhump maxima for 61 SU UMa-type dwarf novae mainly observed during the 2009-2010 se…
Precursor outbursts and superoutbursts in the SU UMa-type dwarf nova NN Camelopardalis
Jeremy Shears, Jerry Foote, William Mack Julian +8
We report photometry of three outbursts of NN Cam in 2007, 2008 and 2009. The 2007 event started with a normal outburst, lasting about 4 days, which was a precursor to a superoutbu…
Outburst characteristics of the dwarf nova SDSS J073208.11+413008.7
Jeremy Shears, Robert Koff, Richard Sabo +3
We report unfiltered photometry during the first confirmed superoutburst of the recently discovered dwarf nova, SDSS J073208.11+413008.7 and conclude that it is a member of the SU…
Discovery and outburst characteristics of the dwarf nova ASAS J224349+0809.5
Jeremy Shears, Patrick Wils, Greg Bolt +5
We report the discovery of a new dwarf nova and our observations of its first confirmed superoutburst during 2009 October. The outburst amplitude was 6 magnitudes. The main outburs…
The orbital and superhump periods of the deeply eclipsing dwarf nova SDSS J150240.98+333423.9
Jeremy Shears, Tut Campbell, Jerry Foote +13
During July 2009 we observed the first confirmed superoutburst of the eclipsing dwarf nova SDSS J150240.98+333423.9 using CCD photometry. The outburst amplitude was at least 3.9 ma…
Superoutbursts of the SU UMa-type dwarf nova CP Draconis
Jeremy Shears, David Boyd, Denis Buczynski +8
Analysis of observations of the SU UMa-type dwarf nova, CP Dra, between February 2001 and April 2009 has revealed 15 outbursts, at least eight of which were superoutbursts. The sup…
VSX J003909.7+611233: a new Slowly Pulsating B star (SPB) in Cassiopeia?
David Boyd, Christopher Lloyd, Pierre dePonthiere +5
We report the discovery of a new 13th magnitude variable in Cassiopeia close to the variable KP Cas. Analysis of 6 days of intensive photometry shows a regular, near sinusoidal mod…