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What is the difference between Type I and Type II supernovae?
supernovae are classified by the lines in their spectra (which indicate which elements are present). type I supernovae have no hydrogen lines, having been caused by the explosion of a star with no hydrogen envelope. type II supernovae have hydrogen lines, indicating that the exploding progenitor star had retained a significant amount of its hydrogen before its supernova. type I supernovae are further classified based on the presence of silicon lines, which are present in type Ia supernovae but not types Ib and Ic.
Why does a type Ia supernova make a better indicator of distance than a type II supernova?
Type Ia supernovae [See Link] follow a characteristic light curve. This luminosity is generated by the radioactive decay of certain elements. The peak luminosity of the light curve was believed to be consistent across Type Ia supernovae as having a maximum absolute magnitude of about -19.3. This would allow them to be used as a secondary "standard candle" [See Link] to measure the distance to their host galaxies
What are supernovae explosions of type 2?
A Type II supernova results from the rapid collapse and violent explosion of a massive red supergiant star. A star must have an initial mass of roughly at least 8 times (and no more than 40-50 times) the mass of the Sun for this type of explosion. The star produces a massive core of iron by a series of nuclear fusion reactions. Iron cannot be used to produce more energy and the core collapses under gravity. The energy released in this gravitational collapse is the cause of the explosion. Also there is the presence of hydrogen in the composition of the spectrum. Finally, this type of supernova is seen only in the spiral arms of galaxies and in H II galaxies, but not in elliptical galaxies.
What can you conclude about a Type I supernova?
It is right to conclude that a type I supernova is what it is because it managed to take out so much matter from its surrounding neighbor until it exceeded a 1.4M Chandrasekhar limit. Exceeding that limit meant that it had to tip over.
How many types of supernova are there?
Supernovas [See Link] are classified according to the absorption lines of different chemical elements that appear in their spectra. The classification can be simplified to Type I or Type II Type II - If a supernova's spectrum contains a line of hydrogen in the visual portion of the spectrum. Type I - all the rest. These are broken down even further. Type:- Ia - When a white dwarf merges with another star. Ib & Ic are formed by massive stars running out of fuel but have lost the outer layer of hydrogen and helium like Wolf-Rayet stars Type II are the "normal" types of supernova, where massive stars can no longer maintain hydrostatic equilibrium and the core collapses IIP Reaches a "plateau" in its light curve IIL Displays a "linear" decrease in its light curve Supernova [See Link] classifications are based on chemical composition.
What is the difference between Type I and Type II supernovae?
supernovae are classified by the lines in their spectra (which indicate which elements are present). type I supernovae have no hydrogen lines, having been caused by the explosion of a star with no hydrogen envelope. type II supernovae have hydrogen lines, indicating that the exploding progenitor star had retained a significant amount of its hydrogen before its supernova. type I supernovae are further classified based on the presence of silicon lines, which are present in type Ia supernovae but not types Ib and Ic.
Black holes form from the remains of stars that?
"explode as supernovae". These are called Type II supernovae and sometimes a neutron star is formed, not a black hole.
Almost all the Elements on Earth were produced in Supernovae?
true
What are the key differences between a type 1a supernova and a type 2 supernova?
Type 1a supernovae occur in binary star systems where one star is a white dwarf that accumulates material from its companion until it reaches a critical mass, causing a thermonuclear explosion. Type 2 supernovae happen when a massive star runs out of fuel and collapses under its own gravity, leading to a powerful explosion. The key difference is the mechanism of the explosion: type 1a is caused by thermonuclear reactions, while type 2 is due to gravitational collapse.
Lung surfactant is produced by?
type II alveolar cells
Why does a type Ia supernova make a better indicator of distance than a type II supernova?
Type Ia supernovae [See Link] follow a characteristic light curve. This luminosity is generated by the radioactive decay of certain elements. The peak luminosity of the light curve was believed to be consistent across Type Ia supernovae as having a maximum absolute magnitude of about -19.3. This would allow them to be used as a secondary "standard candle" [See Link] to measure the distance to their host galaxies
How are gamma rays produced?
Gamma rays are produced by high-energy processes such as nuclear reactions, supernovae explosions, or particle interactions. These processes release immense amounts of energy, causing some of it to be emitted in the form of gamma rays, which are the most energetic type of electromagnetic radiation.
What occurs in the body with type II diabetes?
In Type II diabetes, the pancreas may produce enough insulin, however, cells have become resistant to the insulin produced and it may not work as effectively
What are supernovae explosions of type 2?
A Type II supernova results from the rapid collapse and violent explosion of a massive red supergiant star. A star must have an initial mass of roughly at least 8 times (and no more than 40-50 times) the mass of the Sun for this type of explosion. The star produces a massive core of iron by a series of nuclear fusion reactions. Iron cannot be used to produce more energy and the core collapses under gravity. The energy released in this gravitational collapse is the cause of the explosion. Also there is the presence of hydrogen in the composition of the spectrum. Finally, this type of supernova is seen only in the spiral arms of galaxies and in H II galaxies, but not in elliptical galaxies.
What produces surfactant?
Surfactant is produced by the type II alveolar cells in the lungs. These cells secrete surfactant which helps lower surface tension in the alveoli, preventing collapse and facilitating gas exchange.
What can you conclude about a Type I supernova?
It is right to conclude that a type I supernova is what it is because it managed to take out so much matter from its surrounding neighbor until it exceeded a 1.4M Chandrasekhar limit. Exceeding that limit meant that it had to tip over.
How many types of supernova are there?
Supernovas [See Link] are classified according to the absorption lines of different chemical elements that appear in their spectra. The classification can be simplified to Type I or Type II Type II - If a supernova's spectrum contains a line of hydrogen in the visual portion of the spectrum. Type I - all the rest. These are broken down even further. Type:- Ia - When a white dwarf merges with another star. Ib & Ic are formed by massive stars running out of fuel but have lost the outer layer of hydrogen and helium like Wolf-Rayet stars Type II are the "normal" types of supernova, where massive stars can no longer maintain hydrostatic equilibrium and the core collapses IIP Reaches a "plateau" in its light curve IIL Displays a "linear" decrease in its light curve Supernova [See Link] classifications are based on chemical composition.
