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Author Question: Explain the difference between radial and transverse velocities. What will be an ideal ... (Read 22 times)

renzo156

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on: Jul 27, 2018
Explain the difference between radial and transverse velocities.
 
  What will be an ideal response?

Question 2

Most of the hot, young blue stars lie in the ________ of our Galaxy.
 
  A) bulge
  B) globular clusters
  C) central bar
  D) spiral arms
  E) halo


Kimmy

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Reply #1 on: Jul 27, 2018
Answer to Question 1

Radial velocity is found from Doppler shifts, and measures speed along our line of sight. Transverse velocity is motion across our line of sight, and requires both the apparent angular proper motion and knowledge of the parallax and distance.

Answer to Question 2

D


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