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How can you tell if Rigel or Betelgeuse is hotter?
You can tell if Rigel or Betelgeuse is hotter based on their color. Rigel appears blue-white, indicating a hotter temperature, while Betelgeuse appears orange-red, suggesting a cooler temperature. Additionally, the spectral class of Rigel (B8Ia) is hotter than Betelgeuse's spectral class (M1-2Ia).
Why is a White Dwarf hotter than the sun?
A white dwarf is what remains of a star's interior, which is much hotter than the surface because it is closer to the source of fusion.
Is the star Betelgeuse hotter than our sun?
No. The sun is actually hotter than Betelgeuse, but much smaller.
What is hotter than the sun Vega or Betelgeuse?
Betelgeuse is hotter than Vega. Betelgeuse is a red supergiant star with a surface temperature of around 3,500 degrees Celsius, while Vega is a blue-white star with a surface temperature of around 9,600 degrees Celsius.
Is the Sun hotter than Betelgeuse?
Yeah, the Suns radiant pressure is more increased then Betelgeuse.
Is Betelgeuse hotter than Rigel?
No, Rigel is hotter than Betelgeuse. Rigel is a blue supergiant star with a surface temperature of around 12,000 Kelvin, while Betelgeuse is a red supergiant with a surface temperature of around 3,500 Kelvin.
Is betelgeuse bigger than baranrd's star?
Betelgeuse is one of the larger stars, while Barnard's star is just a little red dwarf star. So, yes- Betelgeuse is far larger than Barnard's.
Is a red giant star hotter than a white dwarf star?
No. Color, for stars, is (almost) entirely dependent on "surface" temperature, and white stars are significantly hotter then red ones. (The order from coolest to hottest goes brown, red, orange, yellow, yellow-white, white, blue-white, blue).
Why does Rigel shine as bright as Betelgeuse even though Rigel is much smaller than Betelgeuse?
Rigel appears as bright as Betelgeuse because it is hotter and more luminous, even though it is smaller. The luminosity of a star depends on both its temperature and size, so a hotter, more luminous star can shine as brightly as a larger, cooler star.
What is a clue to a stars temperature?
Its colour. White stars are hotter than blue stars which are hotter than yellow which are hotter than orange, which are hotter than red.
Compared to the star it evolved from a white dwarf is?
Hotter and dimmer. It's much smaller, but much denser.
How are Sirius and betelgeuse unlike?
Sirius and Betelgeuse are both bright stars in the night sky, but they differ in size, color, and temperature. Sirius is a white star, while Betelgeuse is a red supergiant. Betelgeuse is also much larger and cooler than Sirius.
