What happens in a Type 2 supernova?
Type II. These supernovae occur at the end of a massive star’s lifetime, when its nuclear fuel is exhausted and it is no longer supported by the release of nuclear energy. If the star’s iron core is massive enough, it will collapse and become a supernova.
What does a Type 2 supernova leave behind?
Type II supernovae: Type II supernovae usually leave behind one of three objects: A neutron star. A pulsar (this is just a spinning neutron star, really) A black hole.
What is a Type 2 supernova quizlet?
A Type II supernova occurs when a high-mass star’s core becomes dominated by iron, halting the nuclear fusion process. The star’s core can no longer maintain equilibrium, and the core begins to contract.
What type of stars make Type II supernovae quizlet?
Type Ia supernovae are produced by white dwarf stars in a binary star system that have exceeded their Chandrasekhar limit when the companion star dumps a lot of material onto them. Type II supernovae are produced by massive stars whose cores collapse following the exhaustion of their fusion processes.
What is the difference between a Type 1 and Type 2 supernova?
Type I supernova: star accumulates matter from a nearby neighbor until a runaway nuclear reaction ignites. Type II supernova: star runs out of nuclear fuel and collapses under its own gravity.
What is the difference between type1 and type 2 supernova?
What 2 objects can remain after a supernova?
The remnants of the stellar core which are left after the supernovae explosion will follow one of two paths: neutron star or black hole.
What is the difference between Type 1 and Type 2 supernovae quizlet?
What is the difference between Type Ia and Type II supernovae? Physically, type II supernovae are caused by the collapse of a massive star. Type Ia supernovae are driven by a white dwarf which accretes enough mass to exceed the Chandrasekhar limit and collapses into a neutron star.
Why does the presence of iron trigger a supernova?
Why is iron significant to understanding how a supernova occurs? -Supernovae often leave behind neutron stars, which are made mostly of iron. -Iron is the heaviest of all atomic nuclei, and thus no heavier elements can be made. -The fusion of iron into uranium is the reaction that drives a supernova explosion.
What is the difference between type I and type II supernovae quizlet?
Type Ia supernovae are driven by a white dwarf which accretes enough mass to exceed the Chandrasekhar limit and collapses into a neutron star. Type II supernovae have hydrogen lines, indicating that the exploding progenitor star had retained a significant amount of its hydrogen before its supernovae.
Why are white dwarfs more common in our galaxy?
Why? White dwarfs are much more common than black holes in galaxies. The reason for this is that black holes are the remnants (final states) of extremely massive stars (> 25 solar masses) while white dwarfs are the remnants of intermediate and low mass stars (< 10 solar masses).
What kind of stars are Type II supernovae?
Type II-p supernovae are expected to occur from stars that are up to around 90 times the mass of the sun and have a high metallicity. Type II-L supernovae are expected to occur from stars of around the previous mass, but with a lower metallicity. Type II-n supernovae are supernovae that have narrow Hydrogen lines in their emission spectra.
What causes a Type Ia supernova in a binary system?
The leading alternative mechanism scientists believe creates a type Ia supernova is the merger of two white dwarf stars in a binary system. The two white dwarfs may have unstable orbits, such that over time, they would slowly move closer together until they merge.
Are there more than one way to set off a supernova?
(1) There is more than one way to set off a supernova. Although supernovae are rare within our galaxy, they are sufficiently bright to be seen in very distant galaxies. These distant supernovae are classified according to their spectra. There are two basic types of supernova, called (boringly enough) “Type I” and “Type II”.
How are Type Ib and Type Ic supernovae alike?
Type Ic supernovae suffered more mass loss as supergiants, losing both the hydrogen-rich layer and the helium-rich layer (revealing the carbon-rich layer below). Type Ib and type Ic supernovae are essentially the same as type II supernovae.
