How many stars are in binary system

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Questions

1. How many stars are in a binary system?

A)3 B)4 C)1 D)2

2. What kind of information will an eclipsing binary star system give an astronomer?

A) size B) Brightness C) chemical composition D) all the above

3. Main sequence stars are labeled on an HR diagram:

A) across left to right B) top to bottom C) diagonally left to right D) diagonally right to left

4. H-R diagrams compare:

A) luminosity to temperature B) neutrino population to positron population C) radial velocity to line of slight velocity D) magnetism to electricity

5. A visual binary is a star in which the two components of angular separation are telescopically resolved.

A) true

B) false

 

 

Reference no: EM133410247

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