This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Apparently bright Stars as seen from the Earth o Sun, Sirius, Canopus, Arcturus Magnitude: measure relative brightness lower the magnitude brighter the star Looking at Absolute Magnitude tells actual brightness of star though it might not seem as bright to us on Earth because of the distance away the star is at Spectral Type: measures of stellar temperature and size Closest star to Earth besides the Sun is 4.2 lightyears away Normal Kinds of stars o The sun o Brown Dwarf Smaller than the sun .1 times the size of the sun o Giant 10-50 times the size of the sun o Super Giant 50-1000 times the size of the sun o Wolf-Rayet 3-10 times the size of the sun o Hypergiant 1000-2000 times the size of the sun believe they are getting ready to explode Important for measuring stars: size, mass, luminosity, temperature, speed, rotational velocity, stellar winds, magnetic field strength, composition...
View Full Document
- Spring '11