5 Written questions
5 Matching questions
- Issues with Measuring Parallax
- Star Clusters
- White Dwarfs
- a Cool stars which are very large and very bright.
- b Consist of two major groups: Open and Globular
- c Spectral type B (pale blue) Temperature range: 10,000 - 30,000 K
- d Very, very hot stars which are small in size.
- e Everything is moving. Overcome by making more than two measurements, take all motions in account, now calculate parallax then distance.
5 Multiple choice questions
- The apparent shift of an object relative to some distant background as the observer's point of view changes. Allows you to determine close stellar distances. Only works with fairly close stars
- Pair of stars that we can see orbiting each other.
- Spectral type A (aqua) Temperature range: 7,500 - 10,000 K
- The Sun
- 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.
5 True/False questions
Parsec → 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.
Magnitude System → Stars that appear to change in brightness.
Spectral type G → Yellow - Temperature range: 5,000 - 6,000 K.
Eclipsing Binary → Pair of stars that we can see orbiting each other.
Parallax Shift → 1/2 the star's shift back and forth, in degrees.