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Rigel is hotter by a long way with a temperature of 11,000 Kelvin, whereas Betelgeuse is a cool 3,500 Kelvin
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoBy it's spectrum. If it appears blue or white then it is hotter than a red or orange star.
Rigel is a blue-white star whereas Betelgeuse is a red star.
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Rigel aldebaran Sirius Antares KY cygni betelgeuse pollux arrange in ascending order?
In terms of size from smallest to largest, its Sirius, Pollux, Aldebaran, Rigel, Betelgeuse, Antares, and KY Cygni.
Where does the betelgeuse belong?
Rigel (Beta Orionis) is the brightest star in the constellation Orion and the sixth brightest star in the sky.It is a type B star and will have a temperature between 10,000 -> 30,000 KObservations have placed it's surface temperature at 12,130K. This equates to:21,374 degrees Fahrenheit11,857 degrees Celsius
What constellation has 2 of the brightest stars in the sky?
Generally, stars are named with a Greek letter designating the relative brightness followed by the name of the constellation. "Alpha" and "Beta" are (generally) the two brightest stars. So the brightest star in the constellation Scorpio is "Alpha Scorpius". Most bright stars also have Arabic names; Alpha Scorpius is better known as Antares. This pattern doesn't ALWAYS hold; for example, the red giant star Betelgeuse is Alpha Orionis, while Rigel is Beta Orionis. But Rigel is brighter than Betelgeuse! The answer is that Betelgeuse is a somewhat-variable star, and when the stars were formally catalogued, was brighter than Rigel. Betelgeuse has since dimmed a little, and is now less bright that Rigel. Some astronomers use Betelgeuse's variability as a sign that it is nearing the end of its life, and will "soon" explode as a supernova. Of course, "soon" to an astronomer means "within the next 10,000 years or so".
Betelgeuse is the brightest star in the constellation Orion However Betelgeuse is a cool red star that is 520 light years from Earth How can Betelgeuse look so bright if it is that far away?
It isn't the brightest star - at least, usually Rigel is brighter. However, Betelgeuse is variable, and can sometimes be brighter than Rigel. Wikipedia lists its luminosity as 105,000 times the luminosity of our Sun; and the distance, as 640 light years. Assuming these numbers, this would make it as bright as a star that is 10.5 times as bright as our Sun, at a distance of only 6.4 light years. In other words, the extreme luminosity compensates for its distance.
What are 8 conspicuous stars with magnitude of one or higher?
Aldeberan, Vega, Rigel, Betelgeuse, Altair, Arcturus, Sirius, Procyon, Capella, Spica, Antares, Deneb, Regulus, and the Sun are.
Is Betelgeuse hotter than Rigel?
No, Rigel is hotter. Rigel is a blue star with a temperature of about 11,000 K, and Betelgeuse is a red star with a temperature of about 3,500 K.
Why does rigel shine as brightly as betelgeuse even though rigel is much smaller than betelgeuse?
Simply because Rigel is hotter.
Why does Rigel shine as brightly as Betelgeuse even though Rigel is much smaller?
It's hotter
Betelgeuse appears red in the sky Rigel appears very white Which one is hotter?
Rigel is much hotter. Red is the lowest temp. blue and white are the hottest
What are the colors of Rigel and Betelgeuse?
Rigel is blue and Betelgeuse is red.
Which star is brighter Betelgeuse or Rigel?
Rigel is brighter than Betelgeuse.
Which is larger Rigel or Betelgeuse?
Betelgeuse is much larger than Rigel.
How big is Betelgeuse compared to Rigel?
Betelgeuse is much larger than Rigel. Betelgeuse has a radius about 15 times the radius of Rigel, and a volume of about 3500 times Rigel.
Which is brighter Rigel or Betelgeuse?
Rigel is brighter.
Why is Rigel hotter than Betelgeuse?
Quite simply because Rigel is still on the main sequence whereas Betelgeuse has come off the main sequence and is only fusing helium in it's core, whereas Rigel is still fusing hydrogen in it's core. This is the reason for the difference in temperature.
Why does Rigel shine as bright as Betelgeuse even though Rigel is much smaller than Betelgeuse?
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Why does Rigel shine just as brightly as Betelgeuse?
Even though Betelgeuse is much larger, Rigel is brighter due to its much higher temperature. Rigel is about 11,000 K and Betelgeuse is only about 3,500 K.
