what is the difference between diffuse planetary and supernova remnant nebula?
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How can scientists distinguish between planetary nebulae and supernova remnants? ... Old supernova remnants are cooler and thus can emit some optical radiation, but the ratios of the strengths of one spectral line to another (like sulfur to hydrogen) are different from those seen in planetary nebulae.
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Neutron stars are significantly more dense than white dwarfs which themselves are significantly more dense than normal matter on earth. ... -Nova is a smaller explosion out of hydrogen that leaves white dwarfs intact. -X-ray burster is a neutron star that has x-ray bursts. How are nova formed?
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A supernova happens where there is a change in the core, or center, of a star. ... One of the stars, a carbon-oxygen white dwarf, steals matter from its companion star. Eventually, the white dwarf accumulates too much matter. Having too much matter causes the star to explode, resulting in a supernova.
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According to their distance from the Sun and their orbital parameters, TNOs are classified in two large groups: the Kuiper belt objects (KBOs) and the scattered disc objects (SDOs). ... Resonant objects (including Neptune trojans) are plotted in red, classical Kuiper belt objects in blue.
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The core of the star, however, remains intact, and becomes a white dwarf. The white dwarf will be surrounded by an expanding shell of gas in an object known as a planetary nebula. They are called this because early observers thought they looked like the planets Uranus and Neptune.
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For low-mass stars (left hand side), after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. ... Like low-mass stars, high-mass stars are born in nebulae and evolve and live in the Main Sequence.
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There are five types of cloudy or nebulous objects in the sky: planetary nebulae, emission nebulae, reflection nebulae, dark nebulae and supernova remnants. I will cover the planetaries in the next chapter and discuss the other four types here.
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The most obvious difference is that J0523 is the smallest known star—and also the smallest possible star[1]—while UY Scuti is the largest star known. The former is a red dwarf , while UY Scuti is a red supergiant . ... UY Scuti is over 19,860 times larger than J0523, and 1708 times larger than the Sun.
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At larger distances, we need brighter standard candles. Type Ia supernovae are superb standard candles. They are all basically the same (if you've seen one carbon-oxygen white dwarf explode, you've seen them all!) Thus, all Type Ia supernovae have about the same luminosity: L = 4 billion Lsun.
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A sun or star is a large body consisting of mainly Hydrogen and helium. It is massive enough for fusion reactions to take place in its core. ... A planet is any body which orbits a star and has cleared its orbit of other bodies. A planet can be anything from a small rocky body to a large gas giant.
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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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Named after the Latin word for “cloud”, nebulae are not only massive clouds of dust, hydrogen and helium gas, and plasma; they are also often “stellar nurseries” – i.e. the place where stars are born. ... In fact, it is made up of gas and dust particles known collectively as the Interstellar Medium (ISM).
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Star is normally big cloud of very hot gas (plasma) emitting light. Meteor is visible path made of gloving plasma caused by meteoroid entering atmosphere. They both emit light, they are both made from plasma but there similarity ends.
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An emission nebula is a glowing cloud of ionized gas that is excited by ultraviolet radiation absorbed from hot nearby stars. ... A reflection nebula is a nebula produced when starlight reflects from very small dust particles floating in the interstellar medium, resulting in a bluish glow.
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The main difference between stars and planets is that stars have high temperatures compared to planets. ... Because they radiate energy, stars are very bright objects. Planets do not generate their own energy through nuclear reactions. They reflect some of the radiation coming from their parent star.
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After the solar nebula collapsed to form our Sun, a disk of material formed around the new star. The temperature across this protoplanetary disk was not uniform. Since different materials condense at different temperatures, our solar system formed different types of planets.
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Yes, indeed! Many nebulae are visible from Earth in a small and cheap telescope, and even to the naked eye (if you are standing in a sufficiently dark place).