Review Questions for Lecture 6
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Constellation and Sky Lore
Orion, Betelgeuse, Rigel, Orion Nebula
Review Questions from the Text
p. 413, 1-4, 6-10
Review Terms
Absolute Brightness
Absolute Magnitude
Apparent Brightness
Apparent Magnitude
Color Index
Transverse Velocity
Proper Motion
Radial Velocity
Parallax
Parsec
OBAFGKM
Review Concepts
What is stellar parallax? Draw a diagram to show how it can be used to
measure the distance to stars.
What is the distance of a star with a parallax of 0.02 arc seconds? What
is the parallax of a star with distance of 10 pc?
What data do you need to calculate the transverse velocity of a star?
What is the difference between proper motion and transverse velocity?
How can Stephan's law be used to determine the size of stars?
What is the difference between absolute and apparent magnitude? What does
each of these measure?
What is color index? What is it related to the temperature of a star?
List the spectral classes of stars?