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Polaris has a luminosity of 2,200 solar luminosities.
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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.
Why is the suns luminosity 1?
A solar luminosity is equal to the current luminosity of the Sun, which is 3.839 × 1026 W, or 3.839 × 1033 erg/s.So dividing one solar luminosity with the Suns luminosity gives 1.Also it is a lot easier talking about a luminosity of 1 rather than 3.838 x 1026 W, the same way astronomers use 1 AU to mean 150,000,000km.
How does the luminosity of a blackbody vary with its surface temperature?
Both the absorption and the luminosity of a blackbody in equilibrium increase in magnitude with increasing temperature, and the spectral distribution of the luminosity increases in frequency (decreases in wavelength).
What correctly describes the relationship between the luminosity of two stars that have the same radius?
The star that is hotter will have a higher luminosity.
Why are most visual binary stars of low luminosity?
If the binary stars were of too high luminosity it would be impossible to distinguish the two through vision alone. Therefore most visual binary stars are of low luminosity.
What is a Polaris star luminosity?
The main star in the Polaris system has a luminosity which is 2500 times that of the Sun.
Which star has the lowest luminosity?
A black dwarfSee related question for more details
What is a sentence with luminosity in it?
I was enthralled by the luminosity of the deep water jellyfish.
Which is larger in size polaris or pollux?
Its apparent magnitude is about 2, but it's slightly variable. Usually it's given as 1.97v (where v means variable).
What do Polaris and Procyon have in common?
Polaris is the brightest star in the constellation Ursa minor and Procyon is the brightest star in the constellation canis minor but the brightness of Procyon is not due to it's intense luminosity but it's closeness to the sun, at a distance of 11.46 light years, but both stars are bright
How is star luminosity measured?
A star's luminosity is measured according to the relevance to the sun. Basically for example, if a star is 8,300 degrees Celsius and has a luminosity of 0.001; the luminosity is compared to the sun.
Who is the guy in the Luminosity commercial?
Michael Emerson is in the Luminosity commercial.
What is luminosity of the Rigel?
Rigel has a luminosity of 117,490 solar luminosities.
What is the luminosity of the sun?
The absolute luminosity is about 3.839×1026 W, or 3.839×1033 erg/second. The comparative luminosity of an astronomical object is based on the Sun, so it has a relative luminosity of 1.
What is a giant star?
A giant star is a star with substantially larger radius and luminosity than a main sequence star of the same surface temperature.There are many giant stars.Orange giantsYellow giantsWhite giantsRed giantsBlue giants
What is a sentence with luminosity?
The stars in the night sky shine with a remarkable luminosity.
How do you determine a stars luminosity?
To determine a star's luminosity is from size and temperature.
