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# How do astronomers use luminosity?

Updated: 12/3/2022

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Q: How do astronomers use luminosity?
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### How do astronomers measure stellar luminosity?

The reference that astronomers use to compare the luminosity of other stars is the sun's luminosity. The luminosity is denoted in multiples of the sun's luminosity. For example, the luminosity of the star Sirius is 25 times the luminosity of the sun.

### Why is the suns luminosity 1?

A solar luminosity is equal to the current luminosity of the Sun, which is 3.839 &times; 1026 W, or 3.839 &times; 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.

### What is a Hertzsprung-Russell diagram and how do astronomers use it?

i really o not understand the significance of the question that is asking

### What are the different ways astronomers use to study stars?

the astronomers use Absolute magnitude

### What is the difference between a star's luminosity and brightness?

The difference between apparent brightness and luminosity is that apparent brightness means that a star may appear to be bright, but only looks bright because of the relatively closeness a star is to earth. Luminosity is used by astronomers and refers to the power output of a star. Apparent Brightness means a star may appear to be very bright but only look that way because it is relatively close to Earth. Luminosity just refers to the power output of a star.

### What is the difference between a star's brightness and luminosity?

The difference between apparent brightness and luminosity is that apparent brightness means that a star may appear to be bright, but only looks bright because of the relatively closeness a star is to earth. Luminosity is used by astronomers and refers to the power output of a star. Apparent Brightness means a star may appear to be very bright but only look that way because it is relatively close to Earth. Luminosity just refers to the power output of a star.

### What is a sentence with luminosity in it?

I was enthralled by the luminosity of the deep water jellyfish.

### How do astronomers use infrared lights?

Astronomers use infrared light to map the dust in between stars.

### Where do astronomers snort coke?

They use the bathroom like anyone else in a house or building. They use the restroom, they are astronomers, not astronauts.

### What do astronomers use?

Astronomers can use their eyes to study the stars. They can also use various telescopes that either refract, reflect, and detect exotic formations.

telescope

Yes