SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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reddish orange with low luminosity and highsurface temperature
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reddish orange with high luminosity and lowsurface temperature
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blue white with low luminosity and low surfacetemperature
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blue white with high luminosity and highsurface temperature
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Detailed explanation-1: -For a star, Betelgeuse has a rather low surface temperature (6000 F compared to the sun’s 10, 000 F). The low temperature means that the star will appear orange-red in color. Betelgeuse is the brightest star in Orion and marks the western shoulder of the constellation.
Detailed explanation-2: -It is a distinctly reddish, semiregular variable star whose apparent magnitude, varying between +0.0 and +1.6, has the widest range displayed by any first-magnitude star. At near-infrared wavelengths, Betelgeuse is the brightest star in the night sky.
Detailed explanation-3: -Betelgeuse has a luminosity of about 14, 000 Suns at maximum and 7600 Suns at minimum. The peak absolute magnitude of Betelgeuse is about-5.6. The surface temperature is that of a typical M-type red supergiant, about 3100 degrees Kelvin.
Detailed explanation-4: -Betelgeuse has a very high luminosity (40, 000 times brighter than our Sun), but its surface is cool (less than 4000 K).
Detailed explanation-5: -Red stars like Betelgeuse therefore have much cooler surface temperatures than do blue-white stars like Rigel. Betelgeuse has a surface temperature of 3, 500 Kelvin.