8) Calculate the luminosity of a star that has a radius of 3Rs and a temperature of 2Tsum-
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A:
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A: As we know that Using weins displacement law,λmax T = b -----(1).where b is a constant. known as…
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A: There are molecules of gas and dust in interstellar space. They are sent out when a star dies.…
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A: Given,Absolute magnitude, M =- 10Apparent magnitude, m = 5From magnitude distance formula,m -M = 5…
Q: 13) Calculate the luminosity in watts from the absolute magnitude for the given stars: (b) Sirius (M…
A: The luminosity of a star or an astronomical object is defined as the energy radiated per unit of…
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A:
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Q: 7) Calculate the luminosity of a star that has a radius of 4.2Rsun and a temperature of 5Tsun
A: Stars generate an immense amount of energy through fusion. The luminosity of a star or a galaxy is…
- The luminosity of a star or a galaxy is defined as the energy radiated by the star or galaxy.
- The luminosity is directly proportional to the temperature. Hotter stars are more luminous than colder stars.
- The luminosity of a star can be defined in terms of the luminosity of the Sun. It is given by,
Here L is the luminosity of the star, LSun is the luminosity of the Sun, R is the radius of the star, RSun is the radius of the Sun, T is the temperature of the star, and TSun is the temperature of the Sun.
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- Describe the plysical environment and processes to obtain the emission line spectra and absorption line spectra from the stars. Describe the physical environment and processes to obtain the emission line spectra and absorption line spectra from the stars. haha maintained a highanswer for 31. Sirius A has an apparent magnitude of 4.72, determine its luminosity.
- 3- Consider a binary star system in which the two stars are seen to be 1.50" apart. Determine the actual physical separation of those stars (in AU) if this binary system is located 9.50 1.y. from us.31) Star Sirius has an apparent magnitude of -1.47 and an absolute magnitude of 1.41. Estimate the distance to Sirius.At rest hydrogen has a spectral line at 149nm. If this line is observed at 144 nm for the star proxima how fast is proxima moving in km/s
- 33) A star is observed to be having an absolute magnitude of -5.6 and is located at a distance of 159.96 pc. Estimate the apparent magnitude8) A neutron star is found with a radius of 10 km and has a surface temperature of 1,000,000 K. Calculate its luminosity with respect to that of the Sun. nts)6) Estimate the distance to the star with absolute magnitude -5.6 and apparent magnitude 0.75