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Author Question: The spectral lines of a star indicate ionized helium is prominent, yet the star appears orange in ... (Read 128 times)

stephzh

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on: Jul 27, 2018
The spectral lines of a star indicate ionized helium is prominent, yet the star appears orange in color. Explain the problem with this and offer an explanation.
 
  What will be an ideal response?

Question 2

Thanks to the far-flung Voyager and Pioneers, knowledge of our presence has now spread out over 30 light-years.
 
  Indicate whether the statement is true or false


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shaquita

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

Ionized helium is found only in O type stars, which should be blue-white in color; if the star appears orange, it must lie behind a thin dust cloud that is absorbing and scattering most of the shorter wave radiation that the star is sending into space; the star would, therefore, appear much blue and brighter if not for the dust cloud.

Answer to Question 2

FALSE


stephzh

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

sarah_brady415

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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