5 Written questions
5 Matching questions
- Main Sequence
- Spectral type A
- Eclipsing Binary
- Star Clusters
- a Consist of two major groups: Open and Globular
- b Aqua - Temperature range: 7,500 - 10,000 K
- c Pair of stars that orbit in the plane of our line of sight causing it to "blink". Often listed as EBS. (Algol in the Iliad by Homer)
- d 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.
- e Most stars, like our sun
5 Multiple choice questions
- Spectral type O (white). Temperature range >30,000 K.
- Orange - Temperature range: 3,500 - 5,000 K.
- Spectral type B (pale blue) Temperature range: 10,000 - 30,000 K
- One of the two major classes of variables. There are five classes. One important example: Cepheid Variables.
- One of the major classes of variables.
5 True/False questions
Four stellar groups → Super Giants, Giants, Main Sequence, White Dwarfs.
Issues with Measuring Parallax → Everything is moving. Overcome by making more than two measurements, take all motions in account, now calculate parallax then distance.
Magnitude System → Most stars, like our sun
Spectroscopic Binary → Two stars that are so close that the only way we can detect the binary nature is through a spectral (red) shift.
Betelgeuse → Spectral type A (aqua) Temperature range: 7,500 - 10,000 K