Review Five
Astronomy I
V. J. Motto
Modus Operandi
• Review of Chapters 9 & 10
• Short Break
• Chapters 11 & 12
• Short Break
• The Sky Tonight
• Laboratories and Experiments
– Comments
– Work in Groups
• A Look at the heavens (weather permitting)
Stellar Distances
• Parallax
– The angle p is called the
angle of parallax.
– d = 206,265/p
• Questions
– How does one determine
the angle p?
– Why is this method not
applicable to all stellar
objects?
– What is the distance of the
closest star?
Brightness
• How is the Apparent Magnitude
determined?
• How is Absolute Visual Magnitude
determined?
• What is luminosity? How does it differ
from Magnitude?
Hertzsprung-Russell Diagram
• What are the possible
labels for the x-axis?
• What are the possible
labels for the y-axis?
• What is the name for the
curve that is pictured?
• Where would you look to
find Giant Stars?
• Where would you look to
find Dwarf Stars?
Binary Stars
• Define the following
– Visual Binaries
– Spectroscopic Binaries
– Eclipsing Binaries
• From observing the
movement of a set of
binary stars, what
information can
Astronomers learn?
Assignment Update
• Term paper
– Let me know your topic today.
– Your references should be determined.
– Doing the research/reading.
– A good source of information is
www.brookscole.com/astronomy
Assignment Update
• Laboratories • Drawings
– Lab1: Star Hunting (Done) – Moon
– Lab2: Sun, Moon, & – Planet
Planets (done) – Sun
– Lab3: Free Falling (done) – Circumpolar
– Lab4: More Free Falling – Constellations
(done)
– Lab5: Circular Motion &
• Term Paper
Acceleration (in progress) – Topic Chosen
• Experiments – Begin Research
– Exp1: (done) – Turn in References
– Exp2: (done) – Work on Outline
– Exp3: (done)