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Why would one star have a greater luminosity than another?
The luminosity of a star depends greatly on the star's mass. A more massive star has a larger pressure and temperature in its core; as a result, nuclear fusion will proceed at a faster rate.
Which star has a higher luminosity and a lower surface temperature than the sun Rigel Bernard's star Alpha Centauri or Aldebaran?
Aldebaran has a higher luminosity and a lower surface temperature than the Sun. Rigel has a higher luminosity but a higher surface temperature than the Sun. Bernard's Star and Alpha Centauri have lower luminosity and higher surface temperatures compared to the Sun.
How can a cool star be more luminous than a hot star?
A cool star can be more luminous than a hot star if it has a larger surface area, emitting more total light. This can occur in giant or supergiant cool stars with a high luminosity due to their larger size, even though their temperature is lower than that of a smaller, hotter star.
What is a giant star?
A giant star is a massive star in a late stage of its life cycle where it has expanded and increased in size compared to its main sequence phase. Giants are typically much larger and brighter than main sequence stars like the Sun. They eventually exhaust their fuel and may evolve into supernovae or other stellar remnants.
Does smaller mass stars have a greater luminosity than larger mass stars?
This is not necessarily true. most of the time stars with a larger diameter have more mass but some stars with a smaller diameter are more dense and have a greater mass. Find a main sequence star chart and you can compare the data.
Why would one star have a greater luminosity than another?
The luminosity of a star depends greatly on the star's mass. A more massive star has a larger pressure and temperature in its core; as a result, nuclear fusion will proceed at a faster rate.
What star has a surface temperature 9000k and luminosity about 1 to 20 times greater than the sun?
Sirius
Which star has a higher luminosity and a lower surface temperature than the sun Rigel Bernard's star Alpha Centauri or Aldebaran?
Aldebaran has a higher luminosity and a lower surface temperature than the Sun. Rigel has a higher luminosity but a higher surface temperature than the Sun. Bernard's Star and Alpha Centauri have lower luminosity and higher surface temperatures compared to the Sun.
What if the star has a bigger surface area but a smaller temperature how would that affect the luminosity?
As temperature decreases, luminosity will also decrease As radius increases (and with it surface area, but radius is a much easier to work with if you're trying to compare stars so we usually say radius) luminosity will also increase. If both are happening at the same time, it is possible that the luminosity of the star will remain more or less constant. Often one change will dominate the other, such as when a star goes through the red giant phase when the increase in radius has a far greater effect than the drop in temperature, and the star becomes more luminous.
How can a cool star be more luminous than a hot star?
A cool star can be more luminous than a hot star if it has a larger surface area, emitting more total light. This can occur in giant or supergiant cool stars with a high luminosity due to their larger size, even though their temperature is lower than that of a smaller, hotter star.
Why do cool stars have greater luminosity than our sun?
They do not necessarily have greater luminosity, it depends on their size. Betelgeuse is cooler and brighter; a red dwarf is cooler and less bright.
What is a giant star?
A giant star is a massive star in a late stage of its life cycle where it has expanded and increased in size compared to its main sequence phase. Giants are typically much larger and brighter than main sequence stars like the Sun. They eventually exhaust their fuel and may evolve into supernovae or other stellar remnants.
Who is the bigger the big giant star or the sun?
A giant star is smaller than the sun.
Explain how a red star can be more luminous than a bluish-white star?
A red star can be more luminous than a bluish-white star if it is larger in size and/or hotter in temperature. The luminosity of a star is determined by its size and temperature, with larger and hotter stars emitting more energy. Therefore, a red star that is larger and hotter than a bluish-white star can be more luminous.
What is a Subdwarf star?
A star with luminosity class VI under the Yerkes Spectral Classification System. They have luminosity 1.5 to 2 magnitudes lower than main-sequence stars of the same spectral type.
Does smaller mass stars have a greater luminosity than larger mass stars?
This is not necessarily true. most of the time stars with a larger diameter have more mass but some stars with a smaller diameter are more dense and have a greater mass. Find a main sequence star chart and you can compare the data.
How big is 17 Tauri?
T Tauri stars are pre-main sequence stars. They are not a particular star and can vary in size depending on the propagator star and the amount of matter around it. For the individual star [See related question]
