C. Koen

University of the Western Cape — South Africa

Physics and Astronomy · Physical Sciences

37h-index4.9kcitations276works0.32yr avg
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Research Topics

Stellar, planetary, and galactic studies(190), Astronomy and Astrophysical Research(106), Astronomical Observations and Instrumentation(87), Astrophysics and Star Formation Studies(70), Astro and Planetary Science(40)

Publications276 total

Stochastic time series modelling of <i>TESS</i> photometry of classical T Tauri stars
Monthly Notices of the Royal Astronomical Society·2025· 1 citedOpen Access
Autoregressive Moving Average Modelling of <i>TESS</i> Photometry of Massive Stars
Monthly Notices of the Royal Astronomical Society·2025Open Access
How many random observations are needed for good phase coverage of a periodic source?
Experimental Astronomy·2024Open Access
Amplitude and phase changes in <i>TESS</i> photometry of five short period weak-lined T Tauri stars
Monthly Notices of the Royal Astronomical Society·2024Open Access
WISE J152614.95-111326.4, an unusual variable star
Publications of the Astronomical Society of Australia·2024Open Access
Multi-periodicity in the high gravity blue large amplitude pulsator ZTF J071329.02-152125.2
Publications of the Astronomical Society of Australia·2024Open Access
New time-series photometry of the magnetic white dwarf Star Feige 7
Publications of the Astronomical Society of Australia·2024· 1 citedOpen Access
Gaia21bty: An EXor light curve exhibiting a FUor spectrum
Monthly Notices of the Royal Astronomical Society·2023· 12 citedOpen Access
Multifilter Time-series Observations of Eleven Blue Short-period ATLAS Variable Stars
The Astronomical Journal·2023Open Access
Multifilter observations of the complex periodic variations in eight pre-main sequence stars
Monthly Notices of the Royal Astronomical Society·2022· 2 cited
Candidate and confirmed ultrashort period main-sequence binary stars
Monthly Notices of the Royal Astronomical Society·2022· 2 cited
On the lower limit of contact binary star periods
Monthly Notices of the Royal Astronomical Society·2022· 3 cited
The ODYSSEUS Survey. Motivation and First Results: Accretion, Ejection, and Disk Irradiation of CVSO 109
The Astronomical Journal·2022· 37 citedOpen Access
Anomalous Orbital Characteristics of the AQ Col (EC 05217-3914) System
The Astrophysical Journal·2022· 5 citedOpen Access
New photometry of 12 ultrashort-period late-type binary stars
Monthly Notices of the Royal Astronomical Society·2021· 7 cited
Orbital Characteristics of the AQ~Col (EC~05217-3914) System
arXiv (Cornell University)·2021Open Access
A Detection Threshold in the Amplitude Spectra Calculated from TESS Time-Series Data
arXiv (Cornell University)·2021· 26 citedOpen Access
Rotational variation in the chemically peculiar B0 star θ Car as seen by <i>TESS</i>
Monthly Notices of the Royal Astronomical Society·2021· 1 citedOpen Access
Multifilter Observations of the Complex Periodic Variations in the M-dwarf Star RIK 90
The Astronomical Journal·2021· 3 citedOpen Access
An Exploration of Three New Methods to Facilitate the Calculation of the Significance Levels of Periodogram Peaks by Simulation
The Astronomical Journal·2021· 7 citedOpen Access
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Frequent Co-authors

D. O’Donoghue(11), D. Kilkenny(8), R. S. Stobie(8), F. van Wyk(8), D. Kilkenny(5), F. Marang(4), D. O’Donoghue(3), M. Benisty(3), A. E. Lynas-Gray(3), D. Kilkenny(3), D. A. H. Buckley(3), S. D. Kawaler(3), L. A. Balona(3), D. Kilkenny(3), N. C. Hambly(3), H. T. MacGillivray(3), B. Lazareff(2), Jean-Philippe Berger(2), J. Kluska(2), J.-B. Le Bouquin(2)