what are the observational differences between type i and type ii supernovae?
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Type I and Type II Supernovae. Supernovae are classified as Type I if their light curves exhibit sharp maxima and then die away gradually. The maxima may be about 10 billion solar luminosities. Type II supernovae have less sharp peaks at maxima and peak at about 1 billion solar luminosities.
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White dwarfs are formed from the collapse of low mass stars, less than about 10 time the mass of the Sun. This star loses most of its mass in a wind, leaving behind a core that is less than 1.44 solar mass. On the other hand, neutron stars are formed in the catastrophic collapse of the core of a massive star.
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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.
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The main difference is that a SOC 1 Type I report is an attestation of controls at a service organization at a specific point in time, whereas a SOC 1 Type II report is an attestation of controls at a service organization over a minimum six-month period.
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Seyfert type 1 galaxies are AGNs with the accretion disk tipped slightly from face-on. Seyfert type 2 galaxies are AGN accretion disks with an edge-on view. ... The gas in the disk is orbiting at high speeds and short-duration fluctuations in brightness limit the size of the object at the center of an AGN.
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Maybe you meant “Nebular hypothesis”. If yes, then the difference is that the former is about formation and evolution of planetary systems only; while the latter covers formation and evolution of the whole Universe. ... For Big bang theory on the other hand it is the planets that have lower priority.
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The Luminosity of a star depends on BOTH its temperature and its radius (surface area): L is proportional to R2 T4. A hotter star is more luminous than a cooler one of the same radius. A bigger star is more luminous than a smaller one of the same temperature.
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A nova is an explosion from the surface of a white-dwarf star in a binary star system. A supernova is a violent stellar explosion that can shine as brightly as an entire galaxy of billions of normal stars. ... Astronomers divide supernovae into two groups: Type I and Type II.
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When the stolen amount reaches 1.4 times the mass of the sun, the white dwarf explodes as a supernova and completely vaporizes. Because of this 1.4 ratio, astronomers use Type Ia supernovae as "standard candles" to measure distances in the universe.
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1. White dwarfs are formed from the collapse of low mass stars, less than about 10 time the mass of the Sun. This star loses most of its mass in a wind, leaving behind a core that is less than 1.44 solar mass. On the other hand, neutron stars are formed in the catastrophic collapse of the core of a massive star.
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Type Ia supernovae are useful probes of the structure of the universe, since they all have the same luminosity. By measuring the apparent brightness of these objects, one also measures the expansion rate of the universe and that rate's variation with time.
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What are the characteristics of globular cluster stars? The evolution of a protostar slows significantly as it approaches the main sequence. Type M stars evolve to the main sequence faster than our G type Sun. there are massive O and B stars emitting high energy photons that ionize the remainder of the cloud.
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The difference between the two is mainly in the type of inciting event rather than clinical presentation: type I does not include obvious nerve injury, whereas type II CRPS occurs with documented nerve injury. CRPS can occur in both the acute setting and as an exacerbation or change in existing chronic pain.
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A Type 1a supernova is a cataclysmic explosion of a white dwarf star. These supernovae are currently the best way to measure dark energy because they are visible across intergalactic space. Also, they can function as "standard candles" in distant galaxies since the intrinsic brightness is known.
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Type I, Type II, and Type III Barricades Type I barricades have one reflective rail on either side of the frame, type II barricades have two reflective rails, and type III barricades have - you guessed it - three reflective rails. The more reflective rails, the sturdier the barricade.
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Type I Hard Hats are intended to reduce the force of impact resulting from a blow only to the top of the head. ... Type II Hard Hats are intended to reduce the force of lateral impact resulting from a blow which may be received off-center, from the side, or to the top of the head.
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The difference between Type 1 and Type 2 second degree heart block: Type 1 has increasing PR intervals, increasing until the QRS is "dropped" or missing. Type 2 has constant PR intervals, with randomly dropped QRS complexes.