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Name 3. Stars from what part of the main sequence are likely to become black hol

ID: 292308 • Letter: N

Question

Name 3. Stars from what part of the main sequence are likely to become black holes? Explain your answer. (You may need to look for additional information to answer this question. If you were to look up into the sky for a few hours, and see 100 stars or take a picture of 100 stars making up a starfield), why would you see the particular stars that you see out of the billions of stars in the Universe? Include two main reasons. (Thinking about magnitude might help you answer this question.) Background Part 2: Variable Stars

Explanation / Answer

3.Most black holes form from the remnants of a large star that dies in a supernova explosion. (Smaller stars become dense neutron stars, which are not massive enough to trap light.) If the total mass of the star is large enough (about three times the solar masses ) If the mass of a star exceeds MOV, and if it does not lose mass during its evolution it can no longer reach any stable final state. The force of gravity will dominate over all other forces, and the star will collapse to a black hole.

Supermassive Black Hole is thought to lie at the heart of active galaxies and quasars, providing the gravitational powerhouse that explains the source of energy in these objects. This type of black hole has a mass many times larger than that of a single star. The star will collapse and become a black hole is the final fate of a star of 30 solar masses when it is on the main sequence

4. Betelgeuse:(? Orionis)- Betelgeuse (yes, pronounced beetle-juice) is a M2I red supergiant about 600 LY away. It is most likely a young star evolving quite rapidly. Betelgeuse is usually the second brightest star in Orion with an apparent magnitude of around 0.58, but since it's a variable star, Betelgeuse is sometimes brighter than Rigel. Also, it is one of the vertices of the Winter Triangle, along with Sirius and Procyon. "Betelgeuse" comes from a mistranslation of the Arabic phrase for "hand of the central one". Betelgeuse is considered very likely to go supernova after its red giant phase.

Capella:(? Aurigae)- Part of the Hyades moving group, Capella is the 6th brightest star in the night sky and the 3rd brightest in the northern celestial hemisphere. It is actually a "star system" of 4 stars in 2 pairs. The first pair are G8III and K0III stars (probably previously A-class stars that have now moved off the main sequence and are becoming red giants) while the second pair consists of 2 small, cool, dim red dwarfs. Combined, these stars have an apparent magnitude of 0.08; additionally, they are 42.2 LY from Earth. There are lots of x-rays being emitted from the corona of the largest star. Capella means "she-goat.