DiscoveryofWhiteDwarfs—1Oct •Adams’discovery •Magnitude,apparent &absolute •Whyarewhitedwarfs muchsmallerthan starslikethesun? •Normalgas& degenerategas SiriusA&B http://chandra.harvard.edu/photo/2000/0065/0065_optical.jpg •Homework4and5aredueon ...
two years after the moment when original catalog of SMC eclipsing binaries (Udalski et al. 1998) was published. The quality of OGLE-DIA photometry can be demon- strated by a comparison of the I light curves obtained with both methods. As an example I present a 17-th magnitude ...
Magnitude, in astronomy, measure of the brightness of a star or other celestial body. The brighter the object, the lower the number assigned as a magnitude. In ancient times, stars were ranked in six magnitude classes, the first magnitude class containin