Browsing Articles by Subject "Stars -- Rotation"

Browsing Articles by Subject "Stars -- Rotation"

Sort by: Order: Results:

  • Thumbnail
    Analysis of MOST light curves of five young stars in Taurus–Auriga and Lupus 3 star-forming regions 
    Siwak, Michal; Rucinski, Slavek M.; Matthews, Jaymie M.; Kuschnig, Rainer; Guenther, David B.; Moffat, Anthony F. J.; Sasselov, Dimitar; Weiss, Werner W. (Oxford University Press, 2011-08)
    Continuous photometric observations of five young stars obtained by the MOST satellite in 2009 and 2010 in the Taurus and Lupus star formation regions are presented. Using light-curve modelling under the assumption of ...

  • Thumbnail
    Analysis of variability of TW Hya as observed by MOST and ASAS in 2009 
    Siwak, Michal; Rucinski, Slavek M.; Matthews, Jaymie M.; Pojmanski, Grzegorz; Kuschnig, Rainer; Guenther, David B.; Moffat, Anthony F. J.; Sasselov, Dimitar; Weiss, Werner W. (Wiley-Blackwell, 2011-02)
    As a continuation of our previous studies in 2007 and 2008, new photometric observations of the T Tauri star TW Hya obtained by the MOST satellite and the All Sky Automated Survey (ASAS) project over 40 d in 2009 with ...

  • Thumbnail
    Determination of effective temperatures and luminosities for rotating stars 
    Deupree, Robert G. (Robert Gaston), 1946-; Short, C. Ian (Christopher Ian), 1965-; Gillich, A.; Lovekin, C. C.; Toque, N. (American Astronomical Society, 2008-08)
    Spectral energy distributions for models of arbitrarily rotating stars are computed using two-dimensional rotating stellar models, NLTE plane-parallel model atmospheres, and a code to integrate the appropriately weighted ...

  • Thumbnail
    Differential rotation of [epsilon] Eridani detected by MOST 
    Croll, Bryce; Walker, Gordon A. H.; Kuschnig, Rainer; Matthews, Jaymie M.; Rowe, Jason F.; Walker, Andrew; Rucinski, Slavek M.; Hatzes, Artie P.; Cochran, William D.; Robb, Russell M.; Guenther, David B. (American Astronomical Society, 2006-09-01)
    The Microvariability and Oscillations of STars (MOST ) photometric satellite observed three rotations of [epsilon] Eri continuously in late 2005. We detected two spots ([delta] m[approximately] 0.01) at different latitudes ...

  • Thumbnail
    Effects of uniform and differential rotation on stellar pulsations 
    Deupree, Robert G. (Robert Gaston), 1946-; Lovekin, C. C.; Clement, M. J. (American Astronomical SocietyIOP Publishing, 2009-03-01)
    We have investigated the effects of uniform rotation and a specific model for differential rotation on the pulsation frequencies of 10 M[subscript circled dot] stellar models. Uniform rotation decreases the frequencies for ...

  • Thumbnail
    HR 5907: discovery of the most rapidly rotating magnetic early B-type star by the MiMeS collaboration 
    Guenther, David B.; Grunhut, J. H.; Rivinius, Th.; Wade, G. A.; Townsend, R. H. D.; Marcolino, W. L. F.; Bohlender, D. A.; Szeifert, Th.; Petit, V.; Matthews, J. M. (Oxford University Press, 2012-01)
    We report the discovery and analysis of a very strong magnetic field in the rapidly rotating early B-type star HR 5907, based on observations obtained as part of the Magnetism in Massive Stars (MiMeS) project. We infer a ...

  • Thumbnail
    MOST detects corotating bright spots on the mid-O-type giant Xi Persei 
    Ramiaramanantsoa, Tahina; Moffat, Anthony F. J.; Chene, Andre-Nicolas; Richardson, Noel D.; Henrichs, Huib F.; Desforges, Sebastien; Antoci, Victoria; Rowe, Jason F.; Matthews, Jaymie M.; Kuschnig, Rainer; Guenther, David B. (Oxford University Press, 2014-06)
    We have used the MOST (Microvariability and Oscillations of STars) microsatellite to obtain four weeks of contiguous high-precision broad-band visual photometry of the O7.5III(n)((f)) star ξ Persei in 2011 November . ...

  • Thumbnail
    MOST observations of [sigma] Ori E: challenging the centrifugal breakout narrative 
    Guenther, David B.; Townsend, R. H. D.; Rivinius, Th.; Rowe, J. F.; Moffat, A. F. J.; Matthews, J. M.; Bohlender, D.; Neiner, C.; Telting, J. H.; Kallinger, T. (American Astronomical SocietyIOP Science, 2013-05-20)
    We present results from three weeks’ photometric monitoring of the magnetic helium-strong star [sigma] Ori E using the Microvariability and Oscillations of Stars microsatellite. The star’s light curve is dominated by ...

  • Thumbnail
    MOST observations of the roAp stars HD 9289, HD 99563, and HD 134214 
    Guenther, David B.; Gruberbauer, Michael; Huber, D.; Kuschnig, R.; Weiss, W. W.; Matthews, J. M.; Moffat, A. F. J.; Rowe, J. F.; Rucinski, S. M.; Sasselov, D. (EDP Sciences, 2011-06)
    We report on the analysis of high-precision space-based photometry of the roAp (rapidly oscillating Ap) stars HD 9289, HD 99563, and HD 134214. All three stars were observed by the MOST satellite for more than 25 days, ...

  • Thumbnail
    Radial and nonradial oscillation modes in rapidly rotating stars 
    Deupree, Robert G. (Robert Gaston), 1946-; Lovekin, C. C. (American Astronomical SocietyIOP Publishing, 2008-06-01)
    We use two-dimensional stellar models and a two-dimensional finite difference integration of the linearized pulsation equations to calculate nonradial oscillations. This approach allows us to directly calculate the pulsation ...

  • Thumbnail
    Scaling of observable properties in rotating stars 
    Castaneda, Diego; Deupree, Robert G. (Robert Gaston), 1946- (The American Astronomical Society, 2014-10-10)
    The spectral energy distribution as a function of inclination is computed using two-dimensional rotating stellar models and NLTE plane parallel stellar atmospheres. These models cover the range from 1.875M☉ to ...

  • Thumbnail
    Structure of uniformly rotating stars 
    Deupree, Robert G. (Robert Gaston), 1946- (IOP Publishing Limited, 2011-07-10)
    Zero-age main-sequence models of uniformly rotating stars have been computed for 10 masses between 1.625 and 8 M☉ and for 21 rotation rates from zero to nearly critical rotation. The surface shape is used to ...

  • Thumbnail
    Theoretical p-mode oscillation frequencies for the rapidly rotating [delta] Scuti star [alpha] Ophiuchi 
    Deupree, Robert G. (Robert Gaston), 1946- (IOP Publishing Limited, 2011-11-20)
    A rotating, two-dimensional stellar model is evolved to match the approximate conditions of α Oph. Both axisymmetric and nonaxisymmetric oscillation frequencies are computed for two-dimensional rotating models which ...

  • Thumbnail
    WR 110: a single Wolf–Rayet star with corotating interaction regions in its wind? 
    Chene, A.-N.; Moffat, A. F .J.; Cameron, Chris; Fahed, R.; Gamen, R. C.; Lefevre, L.; Rowe, J. F.; St.-Louis, N.; Muntean, V.; De La Chevrotiere, A.; Guenther, David B. (American Astronomical Society, 2011-07-01)
    A 30 day contiguous photometric run with the Microvariability and Oscillations of STars (MOST) satellite on the WN5-6b star WR 110 (HD 165688) reveals a fundamental periodicity of P = 4.08 ± 0.55 days along with a number ...

Search DSpace


Browse

My Account