215 citations · 282 across the 11 of their papers we have counts for
11 papers
The eclipse timings of RR Lyncis
Christopher Lloyd
The times of minima of the bright, eccentric eclipsing binary RR Lyncis are re-investigated. From the TESS data it is found that significant differences in the eclipse timings, par…
High-Amplitude gamma Doradus Variables
Ernst Paunzen, Klaus Bernhard, Stefan Huemmerich +3
According to most literature sources, the amplitude of the pulsational variability observed in gamma Doradus stars does not exceed 0.1 mag in Johnson V. We have analyzed fifteen hi…
Betelgeuse -- A Century and more of Variation
Christopher Lloyd
The mean light curve of Betelgeuse is constructed from the visual data in BAA VSS and AAVSO archives. Period analysis reveals clusters of periods around 2000 and 400 days but these…
The Unusual Eruption of the Extragalactic Classical Nova M31N 2017-09a
Christopher Lloyd, Lewis M. Cook, Seiichiro Kiyota +10
M31N 2017-09a is a classical nova and was observed for some 160 days following its initial eruption, during which time it underwent a number of bright secondary outbursts. The ligh…
A radio pulsing white dwarf binary star
T. R. Marsh, B. T. Gänsicke, S. Hümmerich +23
White dwarfs are compact stars, similar in size to Earth but ~200,000 times more massive. Isolated white dwarfs emit most of their power from ultraviolet to near-infrared wavelengt…
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…