- Home
- →
- Browsing by Author
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing by Author "Guenther, David B."
Now showing items 1-20 of 91
-
(Halifax, N.S. : Saint Mary's University, 2003)Stellar non-radial oscillations (p-modes) are ideal tools to test theories of stellar evolution and to provide information about stellar properties. This thesis develops and tests a technique to determine the stellar model ...
-
(American Astronomical Society, 1995-05)Theoretical isochrones have been constructed using the OPAL opacities to derive the ages of the open clusters NGC 188, M67, and NGC 752 as well as to estimate the amount of convective overshoot at the convective core edge. ...
-
(American Astronomical Society, 2000-03)Detailed models of [alpha] Centauri A and B based on the Hipparcos, Yale, and Soderhjelm parallaxes are compared. The consequences of the uncertainty in mass, luminosity, surface temperature, and composition on the structure ...
-
(American Astronomical SocietyIOP Publishing, 1996-01-10)By mimicking the effects of a magnetic field on the interior structure of a solar model, observed changes in p-mode frequencies over the course of the solar cycle are explained in terms of a change in the intensity and ...
-
Analysis of MOST light curves of five young stars in Taurus–Auriga and Lupus 3 star-forming regions (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 ...
-
(Halifax, N.S. : Saint Mary's University, 2011)Information on 72 confirmed or candidate pre-main-sequence [delta]-Scuti stars is collected and analysed to varying degree of sophistication and completeness. A systematic asteroseismic analysis of around 40 of these stars ...
-
(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 ...
-
(American Astronomical Society, 2009-10-20)NGC 2264 is a young open cluster lying above the Galactic plane in which six variable stars have previously been identified as possible pre-main-sequence (PMS) pulsators. Their oscillation spectra are relatively sparse ...
-
(American Astronomical Society, 2009-06-10)We have acquired simultaneous high-precision space photometry and radial velocities of the bright hybrid [beta] Cep/Slowly Pulsating B pulsator [gamma] Peg. Frequency analyses reveal the presence of six gravity (g) modes ...
-
(Halifax, N.S. : Saint Mary's University, 2007)We investigate in detail the potential of asteroseismology in exploring the structure of intermediate mass (1.6 ≤ M⊙ ≤ 5.0) pre-main sequence stars. It is expected that pre- and post-main sequence ...
-
(Halifax, N.S. : Saint Mary's University, 2013)This thesis presents a new probabilistic method for the asteroseismic analysis of stellar structure and evolution with the goal of providing a universal tool to improve our knowledge of stellar modelling. This new method ...
-
(Oxford University Press, 2013-10)We study 23 previously published Kepler targets to perform a consistent grid-based Bayesian asteroseismic analysis and compare our results to those obtained via the Asteroseismic Modelling Portal. We find differences in ...
-
(Oxford University PressRoyal Astronomical Society, 2013-04-12)We perform a Bayesian grid-based analysis of the solar l = 0, 1, 2 and 3 p modes obtained via BiSON in order to deliver the first Bayesian asteroseismic analysis of the solar composition problem. We do not find decisive ...
-
(American Astronomical Society, 2015-02-10)We report the first planet discovery from the two-wheeled Kepler (K2) mission: HIP 116454 b. The host star HIP 116454 is a bright (V = 10.1, K = 8.0) K1 dwarf with high proper motion and a parallax-based distance of 55.2 ...
-
(American Astronomical Society, 2015-08-20)We report on both high-precision photometry from the Microvariability and Oscillations of Stars (MOST) space telescope and ground-based spectroscopy of the triple system [delta] Ori A, consisting of a binary O9.5II+early-B ...
-
(American Astronomical Society, 2006-05)The [beta] Cephei star [delta] Ceti was considered one of the few monoperiodic variables in its class. Despite (or perhaps because of) its apparently simple oscillation spectrum, it has been challenging and controversial ...
-
(American Astronomical Society, 2005-11-01)We report the detection of three discrete pulsation frequencies in the long-period variable subdwarf B star PG 0101+039 on the basis of ~400 hr of MOST wide-band photometry. The periodicities uncovered lie at 7235, 5227, ...
-
(EDP Sciences, 2007-06)Context. Solar-like oscillations have been discovered in a few red giants, including e Oph, through spectroscopy. Acoustic modes around 60 μHz were clearly seen in this star, but daily aliasing of the groundbased data ...
-
(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 ...
-
Discovery of the new slowly pulsating B star HD 163830 (B5 II/III) from MOST space-based photometry (American Astronomical SocietyIOP Publishing, 2006-05-10)We report the discovery of a new slowly pulsating B star, with the largest number of detected frequencies to date by more than a factor of 3, based on 37 days of MOST (Microvariability and Oscillations of STars) satellite ...
Now showing items 1-20 of 91