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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 else can I help you with?
The diffence in brightness between two stars is related to the?
Their distance away from you and their intrinsic luminosity.
What process of losing their outer layer causes stars to lose?
luminosity or brightness
Are nebulas brighter then stars?
Brightness is defined as a correlation between luminosity and distance. So it will depend on what is brighter and what is nearer to us.
Temperature and brightness of stars are indicated by what?
Temperature of stars is indicated by their color, with blue stars being hotter than red stars. Brightness of stars is indicated by their luminosity, which is how much light a star emits.
What does the HR diagram depict?
The HR diagram, also known as the Hertzsprung-Russell diagram, depicts the relationship between the luminosity and temperature of stars. It shows how stars are distributed in terms of their brightness and temperature, allowing astronomers to classify stars based on these characteristics.
How are stars classifieds?
Stars are classified by their color, temperatures, sizes, and brightness, it could also be by composition and radiation.Scientists classify stars by color, luminosity, and temperature.
How do you determine a stars luminosity?
To determine a star's luminosity, one can measure its apparent brightness as seen from Earth and correct for distance. Using this information along with the star's surface temperature, one can apply the Stefan-Boltzmann law to calculate the star's luminosity. This process allows astronomers to compare the intrinsic brightness of stars regardless of their distance from Earth.
The hertzsprung-russell diagram graphs stars' brightness and?
The Hertzsprung-Russell diagram graphs stars' luminosity or brightness against their surface temperature or color. This diagram is a powerful tool used in astronomy to classify and understand the life cycle and evolutionary stage of stars. It helps astronomers study the relationship between a star's temperature, luminosity, size, and stage of evolution.
What two characteristics are stars classified by?
They are classified by the amount of Light they give off, and their temperature.
What do the terms luminosity and magnitude mean in describing stars?
Luminosity is the total amount of energy a star emits in a certain amount of time, while magnitude is a measure of a star's brightness as observed from Earth. Luminosity is an intrinsic property of a star, whereas magnitude is affected by the distance between the star and the observer. Lower magnitude values correspond to brighter stars.
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.
The temperature and brightness of stars are indicated by their what?
The temperature of stars is indicated by their color, with cooler stars appearing more red and hotter stars appearing bluer. The brightness of stars is measured in terms of luminosity, which is the total amount of energy emitted per unit of time.
