Betelgeuse - the right shoulder star of Orion - is a red giant star. Its radiation...
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Betelgeuse - the right shoulder star of Orion - is a red giant star. Its radiation...
The bright star Betelgeuse in the constellation Orion emits the greatest intensity of radiation at a...
The bright star Betelgeuse in the constellation Orion emits the greatest intensity of radiation at a wavelength of 808 nm. Calculate the surface temperature of the star.
Betelgeuse, a bright red star in the constellation Orion, has a luminosity that is 100,000 times...
Betelgeuse, a bright red star in the constellation Orion, has a luminosity that is 100,000 times that of the Sun However, the surface temperature of Betelgeuse is only 3000 K. Assuming that the emissivity of stars is 1, find the radius of Betelgeuse.
9. The red super-giant star, Betelgeuse, has a radius of8.21xI m. The spherical surface behaves as...
9. The red super-giant star, Betelgeuse, has a radius of8.21xI m. The spherical surface behaves as a blackbody radiator. If the surface temperature is 3500 K, what is the rate at which energy is radiated from the star? a) 721 1031 w(b210 w (c) 7.7 10 w (d) 2.0 10 w (e) 1.9-100 w 10. The coefficient of linear expansion of a certain solid is 71" C. Assuming this solid behaves like most solids, what is its coefficient of volume...
Stellar RadiiThe red supergiant (RSG) star Betelgeuse has a luminosity of 120,000L, and a surface temperature...
Stellar RadiiThe red supergiant (RSG) star Betelgeuse has a luminosity of 120,000L, and a surface temperature ofaboutTeff= 3650 K. What is its’ radius (in both metres and astronomical units)?
How would you go about estimating the size of the star called Betelgeuse using its absolute magni...
How would you go about estimating the size of the star called Betelgeuse using its absolute magnitude (-6) and its spectral class (M)? How many Sun's would it take to cross the diameter of Betelgeuse? The volume of Betelgeuse compared to the Sun. What about Rigel, a Blue Giant star? How does it compare to the Sun?
We observe a red giant with a luminosity 172 times the Sun's and a wavelength of...
We observe a red giant with a luminosity 172 times the Sun's and a wavelength of maximum radiation of 677 nm. What is its radius? (Use Wien's law, Unit 55, to find its temperature.) Its radius is______ × 1010 m.
A red giant star has a temperature of 4500 K and a luminosity of 10700 LSun....
A red giant star has a temperature of 4500 K and a luminosity of 10700 LSun. How many times bigger is this star than the Sun?
2. An O-type star, such as some of the bright young stars in the Orion Nebula,...
2. An O-type star, such as some of the bright young stars in the Orion Nebula, has a surface temperature of roughly 60,000 K. At what wavelength does an O star’s spectrum peak? In what part of the electromagnetic spectrum is this wavelength (e.g. infrared, visible, radio)?
Which of the following statements about red giant stars are true? (Select all that apply.) Red...
Which of the following statements about red giant stars are true? (Select all that apply.) Red giant stars are less luminous than main sequence stars of the same temperature. Red giant stars tend to be more luminous than main sequence stars of the same temperatures because they are larger in size. Red giant stars are less luminous than main sequence stars because fusion happens more rapidly in main sequence stars. A red giant star of a given temperature is more...
Question: . A main sequence star is observed with its spectra being carefully measured. It is...
Question: . A main sequence star is observed with its spectra being carefully measured. It is observed that the wavelength at which the highest intensity of light is observed is max = 639 nm, remember that 1 nm = 10m Part 1) What is the temperature of this star? T= Part 2) Assuming that this star has an emissivity of 1 and a radius of 7.96 x 108 m. The surface area of a circle is given by 47r. What...
Betelgeuse, a bright red star in the constellation Orion, has a luminosity that is 100,000 times that of the Sun However, the surface temperature of Betelgeuse is only 3000 K. Assuming that the emissivity of stars is 1, find the radius of Betelgeuse.
9. The red super-giant star, Betelgeuse, has a radius of8.21xI m. The spherical surface behaves as a blackbody radiator. If the surface temperature is 3500 K, what is the rate at which energy is radiated from the star? a) 721 1031 w(b210 w (c) 7.7 10 w (d) 2.0 10 w (e) 1.9-100 w 10. The coefficient of linear expansion of a certain solid is 71" C. Assuming this solid behaves like most solids, what is its coefficient of volume...
Question: . A main sequence star is observed with its spectra being carefully measured. It is observed that the wavelength at which the highest intensity of light is observed is max = 639 nm, remember that 1 nm = 10m Part 1) What is the temperature of this star? T= Part 2) Assuming that this star has an emissivity of 1 and a radius of 7.96 x 108 m. The surface area of a circle is given by 47r. What...
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