This topic contains a solution. Click here to go to the answer

Author Question: When looking for the Doppler Wobble (radial velocity changes detected due to Doppler shifts), which ... (Read 250 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
When looking for the Doppler Wobble (radial velocity changes detected due to Doppler shifts), which mass combination is most likely to be detected?
 
  A) High mass star, high mass planet
  B) High mass star, low mass planet
  C) Low mass star, high mass planet
  D) Low mass star, low mass planet
  E) A high mass planet; the mass of the star is irrelevant.

Question 2

If dark nebulae are really dark, how do we know they are there?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jointhecircus

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

C

Answer to Question 2

In some cases, they are not thick enough to block all light, so allow some red light through. Even if dense enough, they can still be seen in profile against rich star fields that lie behind them in the plane of the Milky Way.




ss2343

  • Member
  • Posts: 548
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it


sultana.d

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Thyroid conditions may make getting pregnant impossible.

For a complete list of videos, visit our video library