If two stars in a binary has a combined mass of 8 solar?
Question:
masses, and one
star is known to be a G2 main sequence star, what is the
mass of the other
star?
Answer:
I think a G2 is 1 solar mass, so the other one would be 7 solar masses - although there is some variability associated with the A-M classifications.
Don't have the main-sequence diagram in front of me to be able to answer it. Look at the labeled axes of the diagram, you should be able to figure it out.
I'm sure you know the answer, or you wouldn't be asking on this forum. Good for you. You are so smart. If I have a Kenworth T-600 Semi with a Detroit Diesel 550 hp engine and a Eaton Fuller 18 speed transmission, and my load is 37000 lbs in a Utility 53 foot trailer, Which gear would be prime to start out in? ( HINT: It's not first ) Don't know? Well, there ya go.!
Main sequence refers to the mass, but there is a range around 1 solar mass. The G2 is how old.
A G2 Main Sequence star, like the Sun, will have a mass of around the same as the Sun.1 solar mass, give or take about 5-10%.
If the binary was an 8 solar mass binary, then using Newtons mass equations would give you the mass of the other star. Turns out it's about 7 solar masses or around B1-3. You're looking at a star about 5 times the diameter and about 500-1000 times brighter.
More Questions & Answers...