Browsing Articles by Author "Matthews, J. M."

Browsing Articles by Author "Matthews, J. M."

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    Oscillations in the massive Wolf-Rayet star WR 123 with the MOST satellite 
    Guenther, David B.; Lefevre, L.; Marchenko, S. V.; Moffat, A. F. J.; Chene, A. N.; Smith, S. R.; St-Louis, N.; Matthews, J. M.; Kuschnig, R.; Poteet, C. A. (American Astronomical Society and IOP Publishing, 2005-11-20)
    We present the results of intensive visual-broadband photometric monitoring of the highly variable WN8 Wolf-Rayet star WR 123, obtained by the MOST (Microvariability and Oscillations of STars) satellite. This first Canadian ...

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    Pulsation models for the roAp star HD 134214 
    Saio, H.; Gruberbauer, Michael; Weiss, W. W.; Matthews, J. M.; Ryabchikova, T. (Oxford University Press, 2012-02)
    Precise time series photometry with the MOST satellite has led to identification of 10 pulsation frequencies in the rapidly oscillating Ap (roAp) star HD134214. We have fitted the observed frequencies with theoretical ...

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    Regular frequency patterns in the classical [delta] Scuti star HD 144277 observed by the MOST satellite 
    Zwintz, K.; Lenz, P.; Breger, M.; Pamyatnykh, A. A.; Zdravkov, T.; Kuschnig, R.; Matthews, J. M.; Guenther, David B.; Moffat, A. F. J.; Rowe, J. F. (EDP Sciences S.A., 2011-09)

    Context. We present high-precision time-series photometry of the classical δ Scuti star HD 144277 obtained with the MOST (Microvariability and Oscillations of STars) satellite in two consecutive years. The observed ...


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    Regular frequency patterns in the young [delta] Scuti star HD 261711 observed by the CoRoT and MOST satellites 
    Zwintz, K.; Fossati, L.; Guenther, David B.; Ryabchikova, T.; Baglin, A.; Themessl, N.; Barnes, T. G.; Matthews, J. M.; Auvergne, M.; Bohlender, D. (EDP Sciences, 2013-04)
    Context. The internal structure of pre-main-sequence (PMS) stars is poorly constrained at present. This could change significantly through high-quality asteroseismological observations of a sample of such stars. Aims. We ...

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    A search for p-modes and other variability in the binary system 85 Pegasi using MOST photometry 
    Guenther, David B.; Gruberbauer, Michael; Huber, D.; Matthews, J. M.; Croll, B.; Obbrugger, M.; Weiss, W. W.; Rowe, J. F.; Kallinger, T.; Kuschnig, R. (EDP Sciences, 2009-10)
    Context. Asteroseismology has great potential for the study of metal-poor stars due to its sensitivity to determine stellar ages. Solid detections of oscillation frequencies in stars with well constrained fundamental ...

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    Stellar model analysis of the oscillation spectrum of [eta] Bootis obtained from MOST 
    Guenther, David B.; Kallinger, T.; Reegen, P.; Weiss, W. W.; Matthews, J. M.; Kuschnig, R.; Marchenko, S.; Moffat, A. F. J.; Rucinski, S. M.; Sasselov, D.; Walker, G. A. H. (American Astronomical Society, 2005-12-10)
    Eight consecutive low-frequency radial p-modes are identified in the G0 IV star [eta] Bootis based on 27 days of ultraprecise rapid photometry obtained by the MOST (Microvariability and Oscillations of Stars) satellite. ...

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    Stellar modelling of Spica, a high-mass spectroscopic binary with a [beta] Cep variable primary component 
    Tkachenko, A.; Matthews, J. M.; Aerts, C.; Pavlovski, K.; Papics, P. I.; Zwintz, K.; Cameron, C.; Walker, G. A. H.; Kuschnig, R.; Degroote, P.; Guenther, David B. (Oxford University Press, 2016-05-11)
    Binary stars provide a valuable test of stellar structure and evolution, because the masses of the individual stellar components can be derived with high accuracy and in a model-independent way. In this work, we study ...

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    V473 Lyr, a modulated, period-doubled Cepheid, and U TrA, a double-mode Cepheid, observed by MOST 
    Molnar, L.; Derekas, A.; Szabo, R.; Matthews, J. M.; Cameron, C.; Moffat, A. F. J.; Richardson, N. D.; Csak, B.; Dozsa, A.; Reed, P.; Szabados, L.; Heathcote, B.; Bohlsen, T.; Cacella, P.; Luckas, P.; Sodor, A.; Skarka, M.; Szabo, Gy. M.; Plachy, E.; Kovacs, J.; Evans, N. R.; Kolenberg, K.; Collins, K. A.; Pepper, J.; Stassun, K. G.; Rodriguez, J. E.; Siverd, R. J.; Henden, A.; Mankiewicz, L.; Zarnecki, A. F.; Cwiek, A.; Sokolowski, M.; Pal, A.; Guenther, David B.; Kuschnig, R.; Rowe, J.; Rucinski, S. M.; Sasselov, D.; Weiss, W. W. (Oxford University Press, 2017-05)
    Space-based photometric measurements first revealed low-amplitude irregularities in the pulsations of Cepheid stars, but their origins and how commonly they occur remain uncertain. To investigate this phenomenon, we present ...

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    xi Tauri: a unique laboratory to study the dynamic interaction in a compact hierarchical quadruple system 
    Nemravova, J. A.; Harmanec, P.; Broz, M.; Vokrouhlicky, D.; Mourard, D.; Hummel, C. A.; Cameron, C.; Matthews, J. M.; Bolton, C. T.; Borzic, H.; Guenther, David B. (EDP Sciences, 2016-10)
    Context. Compact hierarchical systems are important because the effects caused by the dynamical interaction among its members occur on a human timescale. These interactions play a role in the formation of close binaries ...

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