Table of Contents
- 1 Why do some stars become super red giant?
- 2 What causes stars to turn into red giants or red supergiants?
- 3 What does a red supergiant star become at the end of its life?
- 4 What happens to the core of a supergiant star that causes it to become a neutron star?
- 5 How are red supergiants formed?
- 6 What does a red supergiant turn into?
- 7 What is the average temperature of a red supergiant?
- 8 What causes a star to expand?
Why do some stars become super red giant?
When hydrogen fuel at the centre of a star is exhausted, nuclear reactions will start move outwards into its atmosphere and burn the hydrogen that’s in a shell surrounding the core. Over time, the star will change into a red giant and grow to more than 400 times its original size.
What causes stars to turn into red giants or red supergiants?
The fusion of hydrogen to form helium changes the interior composition of a star, which in turn results in changes in its temperature, luminosity, and radius. Eventually, as stars age, they evolve away from the main sequence to become red giants or supergiants.
How does a red supergiant turn into a supernova?
When a red supergiant has burnt out most of its fuel it resulst in a gravitational collaps, lowering its volume making the star smaller. When it shrinks the temperature get higher resulting in the start of thermonuclear fusion emiting great force and a giant explosion in the form of a supernova.
Why do some stars become super red giant quizlet?
Red Supergiants are created when the core runs out of hydrogen fuel supply and the star begins to collapse in on itself. The outer shells of hydrogen then begin to get hot enough to begin fusion.
What does a red supergiant star become at the end of its life?
Red giant stars collapse to form a white dwarf star that gradually cools over time. Red supergiants quickly collapse, producing a giant explosion called a supernova.
What happens to the core of a supergiant star that causes it to become a neutron star?
In a Type II supernova, the force of gravity is strong enough to overcome electron degeneracy pressure. In objects about 1.4 times as massive as the Sun, the core is prevented from collapsing further because of neutron degeneracy pressure and becomes a neutron star.
What determines whether a protostar forms a red giant or a supergiant?
-When a protostar becomes hot and dense, hydrogen fusion begins, and the star becomes a main sequence star. The star expands in overall size, becoming a red giant or supergiant. -After a red giant finishes burning its helium fuel, the core collapses and expels the outer gas layers.
Which star is a red supergiant quizlet?
Which star is a red supergiant? The red supergiant would be Antares because it is an M1 spectral type (OBAFGKM goes from blue to red and M is red).
How are red supergiants formed?
A red supergiant occurs when a moderately massive star — perhaps 8–40 solar masses in size — exhausts its hydrogen fuel, evolves off of the main sequence, and transitions to fusing helium within its core. As this occurs, the star’s radius expands, causing its temperature to plummet.
What does a red supergiant turn into?
All red supergiants will exhaust the helium in their cores within one or two million years and then start to burn carbon. This continues with fusion of heavier elements until an iron core builds up, which then inevitably collapses to produce a supernova.
What happens when a star becomes a red supergiant?
It changes more drastically than its sun-like siblings and becomes a red supergiant. Because of its higher mass, when the core collapses after the hydrogen burning phase the rapidly increased temperature leads to the fusion of helium very quickly. The rate of helium fusion goes into overdrive, and that destabilizes the star.
What is the red supergiant star in Orion?
The constellation Orion holds the red supergiant star Betelgeuse (the red star in the upper left part of the constellation. It is due to explode as a supernova — the end point of massive stars. Rogelio Bernal Andreo, CC By-SA.30
What is the average temperature of a red supergiant?
Red supergiants are cool and large. They have spectral types of K and M, hence temperatures below 4,100 K. They are typically several hundred to over a thousand times the radius of the Sun, although size is not the primary factor in a star being designated as a supergiant.
What causes a star to expand?
The energy produced by the helium fusion causes the star to expand outward to many times its original size. EDIT: Wikipedia provides some more insight : When the star exhausts the hydrogen fuel in its core, nuclear reactions can no longer continue and so the core begins to contract due to its own gravity.