the meaning of supergiant star
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star supergiant-an extremely bright star of very large diameter and low density. star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior.
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- A main sequence star is basically any star during the 'regular' time in its life: it's not newborn and it's not dying, it's just burning in an ordinary stable manner. The main sequence is the longest phase of a star's life and occurs when there is core hydrogen fusion and a balance of forces.
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Pole star Pole star. Pole star or polar star is a name of Polaris in the constellation Ursa Minor, after its property of being the naked-eye star closest to the Earth's north celestial pole. Indeed, the name Polaris, introduced in the 18th century, is shortened from New Latin stella polaris, meaning pole star. Polaris is also known as Lodestar, Guiding Star, or North Star from its property of remaining in a fixed position throughout the course of the night and its use in celestial navigation. It is a dependable, t
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Polaris Polaris A, the supergiant primary component, is a low-amplitude Population I classical Cepheid variable, although it was once thought to be a type II Cepheid due to its high galactic latitude.
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How To Make Perfect Hard Boiled Eggs How long you let the eggs stay in the water depends on how big the eggs are and how hard you want them cooked. To cook small eggs to medium, let them stand for 14 minutes. To cook extra-large eggs to medium, let them stand for 17 minutes. (We're talking about chicken eggs here. You're on your own with ostrich eggs.)
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Definitions &Translations A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun. Other stars are visible from Earth during the night, appearing as a multitude of fixed luminous points in the sky due to their immense distance from Earth.
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Star Thus, hypergiants only last for a few million years. Compare that to the Sun and similar stars that can keep on burning up to 10 billion years. VY Canis Majoris a.k.a. VY CMa is about 4,900 light years from the Earth. This value, however, is just a rough estimate because it is too far for parallax to be used.
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supergiant star supergiant star. (astronomy). A member of the family containing the intrinsically brightest stars, populating the top of the Hertzsprung-Russell diagram; supergiant stars occur at all temperatures from 30,000 to 3000 K and have luminosities from 10 4 to 10 6 times that of the sun; the star Betelgeuse is an example.
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- Antares is a bright red supergiant star in the constellation of Scorpio. 1  Antares is 550 light years from Earth and the brightest star in the constellation of Scorpius.  Antares is a two star system consisting of the red supergiant Antares A and the much smaller but hotter Antares B.
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- Spica (Alpha Virginis) is the brightest star in the constellation Virgo. It is actually a binary star, comprising of two close orbiting stars.The primary has a spectral class of B1 and the secondary B2.They are both blue giants.pica (Alpha Virginis) is the brightest star in the constellation Virgo. It is in fact a close binary star system so it is impossible to resolve individual stars through a t … elescope. It is approximately 7.4 times larger than our Sun. So it has a radius of about 5,150,400 km.
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Polaris Polaris is a multiple star, comprising the main star (α UMi Aa, a yellow supergiant) in orbit with a smaller companion (α UMi Ab); the pair in orbit with α UMi B (discovered in 1780 by William Herschel).
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- Zeta Persei (ζ Per, ζ Persei) is a star in the northern constellation of Perseus. With an apparent visual magnitude of 2.9,[2] it can be readily seen with the naked eye.
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- a star that suddenly becomes thousands of times brighter and then gradually fades to its original intensity. Compare supernova.
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General Astronomy/Print version Unlike smaller stars, the largest stars have even more spectacular ends. The life track of a high mass star is similar to that of a low mass star like the Sun, except shorter and more violent. High mass stars effectively Live hard and die young. Near the end of their short lives, they puff up into a giant red star, although in this case a supergiant, and then they collapse.
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supergiant su·per·gi·ant. n. Any of various very massive, large, and bright stars, such as Betelgeuse or Rigel, having a luminosity that is thousands of times greater than that of the sun. When a supergiant collapses into a supernova, it may result in either a neutron star or a black hole. (ˈsuːpəˌdʒaɪənt).
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Red Supergiant Stars are On the Way Out Other Types of Supergiants. While red supergiants are the largest of the breed, there are other types of supergiant stars. In fact, it is common for high mass stars, once their fusion process passes beyond hydrogen, that they oscillate back and forth between different forms of supergiants.
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Glossary of Astronomy Terms Magnitude. The degree of brightness of a star or other object in the sky according to a scale on which the brightest star has a magnitude -1.4 and the faintest visible star has magnitude 6. Sometimes referred to as apparent magnitude. In this scale, each number is 2.5 times the brightness of the previous number. Thus a star with a magnitude of 1 is 100 times brighter than on with a visual magnitude of 6.
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- How is the star Betelgeuse different from the sun? Betelgeuse is a supergiant red star that is nearing its end of life. The sun is a relatively small main sequence star in the middle of its life. It is believed that Betelgeu … se is only 10 million years old, and that it has evolved so rapidly because of its extremely high mass - it is one of the largest stars we know of - and its demise as a type II supernova is predicted within only the next 1 million years.
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- A supernova is an explosion of a massive supergiant star. It may shine with the brightness of 10 billion suns! The total energy output may be 1044 joules, as much as the total output of the sun during its 10 billion year lifetime. The likely scenario is that fusion proceeds to build up a core of iron.
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Stellar kinematics Depending on the definition, a high-velocity star is a star moving faster than 65 km/s to 100 km/s relative to the average motion of the stars in the Sun's neighbourhood. The velocity is also sometimes defined as supersonic relative to the surrounding interstellar medium.
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- Generally stars spend most of their active lives travelling through the stage of stellar life-cycle known as the. Main Sequence. I say 'active' life because the remnants of dead stars can persist more or less indefinitely, slowly fading into obscurity. I say 'generally' because even dead stars sometimes find ways to obtain new life (see stellar accretion for example). Main sequence stars fall into several spectral classes, as shown above. Going from top left to bottom right we have, a small dim red dwarf (spectral class M), an orange dwarf (spectral class K) a yellow dwarf, like the Sun
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Regulus Regulus, also designated Alpha Leonis (α Leonis, abbreviated Alpha Leo, α Leo), is the brightest star in the constellation of Leo and one of the brightest stars in the night sky, lying approximately 79 light years from the Sun. Regulus is a multiple star system composed of four stars that are organized into two pairs.
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main sequence A star on the main sequence is one that is generating light and heat by the conversion of hydrogen to helium by nuclear fusion in its core.
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General Astronomy/Print version Betelgeuse is a classic example, a bright red star in orion, visible to the naked eye, and which has a diameter 630 times that of the Sun and 14 times as massive. The example pictured above is a supergiant 500 times the diameter of the Sun and about 12 times as massive.bove left, a look at the structure of a supergiant. Outside the hot central region, the envelope of the star is convective and probably turbulent. (Convection is the mixing of fluid as hot fluids rise and cooler fluids sink.
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Epsilon Sagittarii Epsilon Sagittarii (ε Sagittarii, abbreviated Epsilon Sgr, ε Sgr), also named Kaus Australis, is a binary star system in the southern zodiac constellation of Sagittarius. The apparent visual magnitude of +1.85 makes it the brightest star in the constellation.
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The Largest Stars in the Universe Hypergiants live life fast and furious, whereas dimmer dwarf stars like the Sun have a much steadier and sedate existence. While the largest of the stars will only live millions of years, our Sun will most likely continue to live for billions of years yet. A blue hypergiant, the Pistol Star in the Milky Way galaxy.