What is the spectra of type 1 supernova?

What is the spectra of type 1 supernova?

The spectra of a Type Ia supernova contain a distinct silicon absorption line around 6150 Å (vertical orange line as seen in the figure) ; this line is unique among Type I supernovae and so defines the subgroup-a of the Type I supernovae.

What elements are produced in a Type 1a supernova?

“As usual for normal supernovae, Type Ia supernovae produce “metals”—or, in astronomical terms, chemical elements heavier than hydrogen and helium, the latter pair tracing their origin to the Big Bang—but Type Ia supernovae produce different elements, such as manganese (Mn), nickel (Ni), and iron (Fe).

What happens in a Type 1 supernova?

A type Ia supernova (read: “type one-A”) is a type of supernova that occurs in binary systems (two stars orbiting one another) in which one of the stars is a white dwarf. Beyond this “critical mass”, they reignite and in some cases trigger a supernova explosion.

Which element can you always observe in the spectrum of a Type II supernova?

hydrogen
Type II supernovae are distinguished from other types of supernovae by the presence of hydrogen in their spectra.

What is a Type 1a supernova quizlet?

Type 1a supernovae. a type of supernova that occurs in binary systems (aka two stars orbiting one another) in which one of the stars is a white dwarf. The other star can be anything from a giant star to an even smaller white dwarf.

How are type 1a supernova formed?

When a runaway thermonuclear explosion rips through a white dwarf star and blows the star to bits, it’s called a type 1a supernova. These explosions are incredibly violent and incredibly bright, sometimes outshining entire galaxies.

Why does a Type I supernova show little to no hydrogen in its spectrum?

Why does the spectrum of a carbon-detonation supernova (Type I) show little or no hydrogen? A supernova’s energy is often compared to the total energy output of the Sun over its lifetime. Use the Sun’s current output energy to find its total energy output, assuming it has a main-sequence lifetime of 10^10 years.

Where do Type 1 supernova occur?

A type I supernova occurs in closed binary systems where two average stars orbit around each other quite closely. When one of the stars exhausts its hydrogen it will enter the red giant stage and then collapse into a white dwarf.

What is a type 1a supernova quizlet?

How do spectra show the difference between a type I supernova and a Type II supernova Why does this difference arise?

Observationallly, type Ia supernovae do not have hydrogen line in their spectra and type II supernovae do display these lines. Physically, type II supernovae are caused by the collapse of a massive star.

What produces 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.

How do radioactive isotopes affect the brightness of a supernova remnant?

Line emission from the radioactive isotopes generated in the supernovae contribute significantly to the total apparent brightness of the remnant in the early years, but do not significantly effect the shock wave.

What is the radiative phase of a supernova?

Hence this new phase is known as the radiative phase during which X-ray radiation becomes much less apparent and the remnant cools and disperses into the surrounding medium over the course of the next 10000 years. Supernova remnants are extremely important for our understanding of our Galaxy.

What happens to a neutron star after a supernova explosion?

If the star starts with between 5 and 12 times the mass of our sun, the neutron degeneracy pressure in the core is thought to be able to withstand the gravitational pressure of the star remaining after the supernova explosion. In this case, a neutron star is left in the center of the SNR.

How much energy is released when a white dwarf supernova?

The energy released is on the order of 10 52 ergs, and the white dwarf is completely disrupted in the process. The star can outshine entire galaxies while the nuclear fusion proceeds. This is believed to be the mechanism for Type Ia SNe. What is a Supernova Remnant (SNR)?