Browsing by Author "Kuschnig, Rainer"

Browsing by Author "Kuschnig, Rainer"

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    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 ...

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    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 ...

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    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 ...

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    The [gamma]-ray binary LS 5039: mass and orbit constraints from MOST observations 
    Sarty, Gordon E.; Szalai, Tamas; Kiss, Laszlo L.; Matthews, Jaymie M.; Wu, Kinwah; Kuschnig, Rainer; Guenther, David B.; Moffat, Anthony F. J.; Rucinski, Slavek M.; Sasselov, Dimitar (Wiley-Blackwell, 2011-02)
    The results of a coordinated space-based photometric and ground-based spectroscopic observing campaign on the enigmatic γ-ray binary LS 5039 are reported. 16 d of observations from the MOST satellite have been combined ...

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    Looking for giant earths in the HD 209458 system: a search for transits in MOST space-based photometry 
    Guenther, David B.; Croll, Bryce; Matthews, Jaymie M.; Rowe, Jason F.; Kuschnig, Rainer; Walker, Andrew; Gladman, Brett; Sasselov, Dimitar; Cameron, Chris; Walker, Gordon A. H. (American Astronomical Society, 2007-04)
    We have made a comprehensive transit search for exoplanets down to about 2 Earth radii in the HD 209458 system, based on nearly uninterrupted broadband optical photometry obtained with the MOST (Microvariability and ...

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    Looking for super-Earths in the HD 189733 system: a search for transits in MOST space-based photometry 
    Croll, Bryce; Matthews, Jaymie M.; Rowe, Jason F.; Gladman, Brett; Miller-Ricci, Eliza; Sasselov, Dimitar; Walker, Gordon A. H.; Kuschnig, Rainer; Lin, Douglas N. C.; Guenther, David B. (American Astronomical Society, 2007-12-20)
    We have made a comprehensive transit search for exoplanets down to [similar or equal to]1.5-2 Earth radii in the HD 189733 system, based on 21 days of nearly uninterrupted broadband optical photometry obtained with the ...

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    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 . ...

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    MOST detects transits of HD 97658b, a warm, likely volatile-rich super-Earth 
    Dragomir, Diana; Matthews, Jaymie M.; Eastman, Jason D.; Cameron, Chris; Howard, Andrew W.; Guenther, David B.; Kuschnig, Rainer; Moffat, Anthony F. J.; Rowe, Jason F.; Rucinski, Slavek M. (IOP Publishing Limited, 2013-07-20)
    Through photometric monitoring of the extended transit window of HD 97658b with the MOST space telescope, we have found that this exoplanet transits with an ephemeris consistent with that predicted from radial velocity ...

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    MOST photometry and DDO spectroscopy of the eclipsing (white dwarf + red dwarf) binary V471 Tau 
    Guenther, David B.; Kaminski, Krzysztof Z.; Rucinski, Slavek M.; Matthews, Jaymie M.; Kuschnig, Rainer; Rowe, Jason F.; Moffat, Anthony F. J.; Sasselov, Dimitar; Walker, Gordon A. H.; Weiss, Werner W. (American Astronomical Society, 2007-09)
    The Hyades K2 V + WD system 471 Tau is a prototype post-common envelope system and a likely cataclysmic binary progenitor. We present 10 days of nearly continuous optical photometry by the MOST (Microvariability and ...

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    MOST photometry of the RRd Lyrae variable AQ Leo: two radial modes, 32 combination frequencies and beyond 
    Guenther, David B.; Gruberbauer, Michael; Kolenberg, Katrien; Rowe, Jason F.; Huber, Daniel; Matthews, Jaymie M.; Reegen, Piet; Kuschnig, Rainer; Cameron, Chris; Kallinger, T. (Oxford University Press, 2007-08)
    Highly precise and nearly uninterrupted optical photometry of the RR Lyrae star AQ Leo was obtained with the MOST (Microvariability and Oscillations of Stars) satellite over 34.4 d in 2005 February–March. AQ Leo was the ...

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    MOST space-based photometry of the transiting exoplanet system HD 189733: precise timing measurements for transits across an active star 
    Guenther, David B.; Miller-Ricci, Eliza; Rowe, Jason F.; Sasselov, Dimitar; Matthews, Jaymie M.; Kuschnig, Rainer; Croll, Bryce; Moffat, Anthony F. J.; Rucinski, Slavek M.; Walker, Gordon A. H. (American Astronomical SocietyIOP Publishing, 2008-07-20)
    We have measured transit times for HD 189733b passing in front of its bright (V = 7.67), chromospherically active, and spotted parent star. Nearly continuous broadband optical photometry of this system was obtained with ...

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    MOST space-based photometry of the transiting exoplanet system HD 209458: transit timing to search for additional planets 
    Guenther, David B.; Miller-Ricci, Eliza; Rowe, Jason F.; Sasselov, Dimitar; Matthews, Jaymie M.; Kuschnig, Rainer; Moffat, Anthony F. J.; Rucinski, Slavek M.; Walker, Gordon A. H.; Weiss, Werner W. (American Astronomical SocietyIOP Publishing, 2008-07-20)
    We report on the measurement of transit times for the HD 209458 planetary system from photometry obtained with the MOST (Microvariability and Oscillations of Stars) space telescope. Deviations from a constant orbital period ...

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    Non-detection of previously reported transits of HD 97658b with MOST photometry 
    Dragomir, Diana; Matthews, Jaymie M.; Howard, Andrew W.; Antoci, Victoria; Henry, Gregory W.; Guenther, David B.; Johnson, John A.; Kuschnig, Rainer; Marcy, Geoffrey W.; Moffat, Anthony F. J. (American Astronomical Society, 2012-11-10)
    The radial velocity-discovered exoplanet HD 97658b was recently announced to transit, with a derived planetary radius of 2.93 ± 0.28 R⊕. As a transiting super-Earth orbiting a bright star, this planet would make an attractive ...

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    Photometric variability in FU Ori and Z CMa as observed by MOST 
    Siwak, Michal; Rucinski, Slavek M.; Matthews, Jaymie M.; Kuschnig, Rainer; Guenther, David B.; Moffat, Anthony F. J.; Rowe, Jason F.; Sasselov, Dimitar; Weiss, Werner W. (Oxford University Press, 2013-06)

    Photometric observations obtained by the MOST satellite were used to characterize optical small-scale variability of the young stars FU Ori and Z CMa. Wavelet analysis for FU Ori reveals the possible existence ...


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    A search for transits of GJ 581e and characterization of the host star variability using MOST space telescope photometry 
    Dragomir, Diana; Matthews, Jaymie M.; Kuschnig, Rainer; Rowe, Jason F.; Gladman, Brett J.; Guenther, David B.; Moffat, Anthony F. J.; Rucinski, Slavek M.; Sasselov, Dimitar; Weiss, Werner W. (IOP Publishing Limited, 2012-11-01)
    The GJ 581 system has been amply studied since its discovery in 2005: the number of known planets in the system has increased and their orbital parameters are among the most precisely determined for radial-velocity-detected ...

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    Stable and unstable accretion in the classical T Tauri stars IM Lup and RU Lup as observed by MOST 
    Siwak, Michal; Ogloza, Waldemar; Rucinski, Slavek M.; Moffat, Anthony F. J.; Matthews, Jaymie M.; Cameron, Chris; Guenther, David B.; Kuschnig, Rainer; Rowe, Jason F.; Sasselov, Dimitar (Oxford University Press, 2016-03-11)
    Results of the time variability monitoring of the two classical T Tauri stars, RU Lup and IM Lup, are presented. Three photometric data sets were utilized: (1) simultaneous (same field) MOST satellite observations over ...

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    A stable quasi-periodic 4.18-d oscillation and mysterious occultations in the 2011 MOST light-curve of TW Hya 
    Siwak, Michal; Rucinski, Slavek M.; Matthews, Jaymie M.; Guenther, David B.; Kuschnig, Rainer; Moffat, Anthony F. J.; Rowe, Jason F.; Sasselov, Dimitar; Weiss, Werner W. (Oxford University Press, 2014-10-11)
    We present an analysis of the 2011 photometric observations of TW Hya by the MOST satellite; this is the fourth continuous series of this type. The large-scale light variations are dominated by a strong, quasi-periodic ...

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    A super-Earth transiting a naked-eye star 
    Winn, Joshua N.; Matthews, Jaymie M.; Dawson, Rebekah I.; Fabrycky, Daniel; Holman, Matthew J.; Kallinger, Thomas; Kuschnig, Rainer; Sasselov, Dimitar; Dragomir, Diana; Guenther, David B. (IOP Publishing Limited, 2011-08-10)
    We have detected transits of the innermost planet “e” orbiting 55 Cnc (V = 6.0), based on two weeks of nearly continuous photometric monitoring with the MOST space telescope. The transits occur with the period ...

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    Using MOST to reveal the secrets of the mischievous Wolf–Rayet binary CV Ser 
    Guenther, David B.; David-Uraz, Alexandre; Moffat, Anthony F. J.; Chene, Andre-Nicolas; Rowe, Jason F.; Lange, Nicholas; Kuschnig, Rainer; Matthews, Jaymie M.; Rucinski, Slavek M.; Sasselov, Dimitar (Royal Astronomical Society, 2012)
    The Wolf–Rayet (WR) binary CV Serpentis (= WR113, WC8d + O8-9IV) has been a source of mystery since it was shown that its atmospheric eclipses change with time over decades, in addition to its sporadic dust production. The ...