5 Written Questions
5 Matching Questions
- Solar Luminosity
- Magnitude System
- Spectral type K
- Variable Stars
- a Originated by Hipparchus. A scale to show how bright the stars appear to our eyes (or binoculars and telescopes)
- b Comparing a star's luminosity to our Sun's luminosity. Lsun = 3.8 x 10 ^26 watts.
- c Cool stars which are a little smaller and dimmer than the supergiants.
- d Stars that appear to change in brightness.
- e Orange - Temperature range: 3,500 - 5,000 K.
5 Multiple Choice Questions
- The distance to an object with a parallax angle of 1 arcsecond; unit is pc. One pc = 3.26 light years (ly) = 3.09 x 10^13 km.
- Spectral type B (pale blue) Temperature range: 10,000 - 30,000 K
- Gravitationally-bound grouping of very old stars. <10,000 to one million stars> Old, many, many, stars, organized.
- Cool stars which are very large and very bright.
- The Sun
5 True/False Questions
Cataclysmic Variables → One of the major classes of variables.
Absolute Magnitude → What we see in the sky. Star Charts and planispheres use different size "dots" to represent.
Spectral type B → Pale Blue -Temperature range: 10,000 - 30,000 K
Star's temperature → Measured at a star's photosphere. The photosphere temperature dictates its color. Hotter stars are whiter. Cooler stars are redder. Our Sun is a yellow star.
Eclipsing Binary → Pair of stars that we can see orbiting each other.