Learn about the difference between systematic and random error. Get examples of the types of error and the effect on accuracy and precision.| Science Notes and Projects
We present a mathematical analysis of the statistical parallax method. The method yields physical insight into the maximum-likelihood determinations of the luminosity and velocity distribution and enables us to conduct a vigorous Monte Carlo investigation into various systematic effects. We apply our analytic formalism to the RR Lyrae sample of Layden et al. The velocity distribution of RR Lyrae stars is highly non-Gaussian, with kurtoses K_π= 2.04, K_θ= 3.22 and K_z = 4.28 in the three pri...| arXiv.org
Get the definition of a light year in astronomy. See examples of distances in light years and how the unit compares with parsecs and AU.| Science Notes and Projects