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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.
The diffence in brightness between two stars is related to the?
Their distance away from you and their intrinsic luminosity.
How do size temperature and distance affect a star's magnitude or luminousity?
A star's real luminosity is proportional to the the square of its diameter, and more or less proportional to the fourth power of its absolute temperature. The star's apparent luminosity is proportional to its real luminosity. It is also inversely proportional to the square of the distance.
How do you measure the distance to a cepheid?
Cepheids have a certain relationship between their period, and their absolute luminosity. Thus, their absolute luminosity can be determined. Comparing this with their apparent luminosity allows us to calculate their distance.Cepheids have a certain relationship between their period, and their absolute luminosity. Thus, their absolute luminosity can be determined. Comparing this with their apparent luminosity allows us to calculate their distance.Cepheids have a certain relationship between their period, and their absolute luminosity. Thus, their absolute luminosity can be determined. Comparing this with their apparent luminosity allows us to calculate their distance.Cepheids have a certain relationship between their period, and their absolute luminosity. Thus, their absolute luminosity can be determined. Comparing this with their apparent luminosity allows us to calculate their distance.
What determines all the star's properties such as its temperature size brightness or luminosity and life span?
It's Mass
How do you determine a stars luminosity?
To determine a star's luminosity is from size and temperature.
How many ways can you classify a square?
Several ways.By its size, orientation, colour, luminosity are some possible criteria.Several ways.By its size, orientation, colour, luminosity are some possible criteria.Several ways.By its size, orientation, colour, luminosity are some possible criteria.Several ways.By its size, orientation, colour, luminosity are some possible criteria.
What can you infer from a star's luminosity class?
Anywhere between 0.0001 and 100,000. See related link for a pictorial.
What factor affects the luminosity of a star?
the size of a star
What are the factors that affect the luminosity of the star?
Its size and temperature.
What do stars have that depends on their size?
luminosity and temperature depend on their size but also on their mass
If a star has a large luminosity and also a low surface temperature then it must have?
..... something wrong with it. Generally luminosity is related to temperature.
The luminosity of a quasar is generated in a region the size of?
the solar system.
What characteristics of a star are related to each other?
Mass and gravity are directly connected, and luminosity is closely related to mass.
How are stars classified by size?
There is no real classification for stars by size, they are usually classified by luminosity However, a rough guide is:-HypergiantsSupergiantsBright GiantsGiantsSub giantsDwarfsSub dwarfsRed dwarfsWhite dwarfsBrown dwarfsNeutron starsSee related link for a spectral class breakdown and examples
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.
Which star has the lowest luminosity?
A black dwarfSee related question for more details
