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5 Written questions

5 Matching questions

  1. Parsec
  2. Main Sequence
  3. Spectral type A
  4. Eclipsing Binary
  5. Star Clusters
  1. a Consist of two major groups: Open and Globular
  2. b Aqua - Temperature range: 7,500 - 10,000 K
  3. 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)
  4. 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.
  5. e Most stars, like our sun

5 Multiple choice questions

  1. Spectral type O (white). Temperature range >30,000 K.
  2. Orange - Temperature range: 3,500 - 5,000 K.
  3. Spectral type B (pale blue) Temperature range: 10,000 - 30,000 K
  4. One of the two major classes of variables. There are five classes. One important example: Cepheid Variables.
  5. One of the major classes of variables.

5 True/False questions

  1. Four stellar groupsSuper Giants, Giants, Main Sequence, White Dwarfs.


  2. Issues with Measuring ParallaxEverything is moving. Overcome by making more than two measurements, take all motions in account, now calculate parallax then distance.


  3. Magnitude SystemMost stars, like our sun


  4. Spectroscopic BinaryTwo stars that are so close that the only way we can detect the binary nature is through a spectral (red) shift.


  5. BetelgeuseSpectral type A (aqua) Temperature range: 7,500 - 10,000 K


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