28 citations · 85 across the 7 of their papers we have counts for
7 papers
Topographic Mapping of astronomical light curves via a physically inspired Probabilistic model
Nikolaos Gianniotis, Peter Tino, Steve Spreckley +1
We present a probabilistic generative approach for constructing topographic maps of light curves from eclipsing binary stars. The model defines a low-dimensional manifold of local…
Is Shedir Variable?
Samuel J. George, Ian R. Stevens, Steven A. Spreckley
Before the age of modern photographic and CCD observations alpha Cassiopeiae was labelled as a variable star, though this variability has not been seen with modern instrumentation.…
Asteroseismology of Red Giant stars
N. J. Tarrant, W. J. Chaplin, Y. P. Elsworth +2
Sun-like oscillations, that is p-modes excited stochastically by convective noise, have now been observed in a number of Red Giant stars. Compared to those seen in the Sun, these m…
SMEI observations of previously unseen pulsation frequencies in gamma Doradus
N. J. Tarrant, W. J. Chaplin, Y. P. Elsworth +2
Aims: As g-mode pulsators, gamma-Doradus-class stars may naively be expected to show a large number of modes. Taking advantage of the long photometric time-series generated by the…
The period and amplitude changes of Polaris (alpha UMi) from 2003 to 2007 measured with SMEI
S. A. Spreckley, I. R. Stevens
We present an analysis of 4.5 years of high precision (0.1%) space-based photometric measurements of the Cepheid variable Polaris, obtained by the broad band Solar Mass Ejection Im…
Oscillations in Beta UMi - Observations with SMEI
N. J. Tarrant, W. J. Chaplin, Y. Elsworth +2
Aims: From observations of the K4III star Beta UMi we attempt to determine whether oscillations or any other form of variability is present. Methods: A high-quality photometric tim…