Browsing by Subject "Observation"
Now showing items 1-3 of 3
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The effect of weak lensing on distance estimates from supernovae
(American Astronomical Society, 2013)Using a sample of 608 Type Ia supernovae from the SDSS-II and BOSS surveys, combined with a sample of foreground galaxies from SDSS-II, we estimate the weak lensing convergence for each supernova line of sight. We find ... -
Introducing e-learning in a South African Higher Education institution: challenges arising from an intervention and possible responses
(Blackwell, 2013)This article draws on research conducted at a tertiary institution in South Africa as part of the redesigning of an English for Educational Development (EED) course to include an e-learning online discussion component. ... -
An O−C (and light travel time) method suitable for application to large photometric databases
(Oxford University Press, 2014)The standard method of studying period changes in variable stars is to study the timing residuals or O−C values of light-curve maxima or minima. The advent of photometric surveys for variability, covering large parts of ...