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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 do astronomers use luminosity?
Astronomers use luminosity to measure the total amount of energy a star emits in all directions. By knowing a star's luminosity, astronomers can calculate its distance, size, and temperature. Luminosity helps astronomers understand the life cycle of stars and their evolution.
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).
How does luminosity affect the CHZ?
Luminosity affects the habitable zone (CHZ) by determining the distance at which a planet would need to be from a star to have the right temperature for liquid water to exist on its surface. Stars with higher luminosity would have habitable zones farther out, while stars with lower luminosity would have habitable zones closer in. This means that the size and location of the CHZ around a star depend on its luminosity.
How did Edwin Hubble measure the distance to the Andromeda Galaxy?
Edwin Hubble measured the distance to the Andromeda Galaxy using Cepheid variable stars as standard candles. By observing how the brightness of these stars changed over time, he could determine their true brightness and then calculate their distance based on their apparent brightness. This allowed him to estimate the vast distance to the Andromeda Galaxy.
What is a sentence with luminosity in it?
I was enthralled by the luminosity of the deep water jellyfish.
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.
Total light output of an object is called?
Luminosity
What is luminosity of the Rigel?
Rigel has a luminosity of 117,490 solar luminosities.
Who is the guy in the Luminosity commercial?
Michael Emerson is in the Luminosity commercial.
What is meant by the term Andromeda?
The term Andromeda can mean several different things. In mythology, Andromeda is the daughter of Cassiopeia and Cepheus. Andromeda also can refer to the Andromeda Galaxy, which is 2.5 million light years away from us. Andromeda is also a television series and there's a game called Andromeda. Andromeda can refer to any of these things.
Why was it named the Andromeda galaxy?
Because the Andromeda Galaxy or M31 is a major galaxy and is found in the constellation Andromeda.
What is a sentence with luminosity?
The stars shone with a luminosity reminiscent of diamonds on black velvet .
Who did Andromeda marry?
Andromeda married Perseus.
Why was the Andromeda galaxy named after Andromeda?
The Andromeda galaxy was named after the princess Andromeda from Greek mythology. The constellation Andromeda, in which the galaxy is found, is also named after her. It was named as such because of its proximity to the constellation and its association with the myth.
Was Andromeda turned into a mortal or demigod?
Andromeda was always mortal; after death she became the constellation Andromeda.
