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Author Question: Which of the following stars are brightest at ultraviolet wavelengths? A) G and K stars B) M ... (Read 92 times)

rachel9

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on: Jul 27, 2018
Which of the following stars are brightest at ultraviolet wavelengths?
 
  A) G and K stars
  B) M stars
  C) A and F stars
  D) O and B stars
  E) None; all stars are brightest at optical wavelengths.

Question 2

What type of exoplanet observation allows unambiguous determination of the exoplanet's mass and radius? Can this be done with most exoplanets?
 
  What will be an ideal response?


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brittrenee

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

D

Answer to Question 2

Only planetary transits allow unambiguous determination of exoplanets' mass and radius. As this requires the system to be seen edge-on, such determinations are rare.


rachel9

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Reply 2 on: Jul 27, 2018
Wow, this really help

Joy Chen

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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