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To do so, astronomers calculate the brightness of stars as they would appear if it were 32.6 light-years, or 10 parsecs from Earth. Another measure of brightness is luminosity, which is the power of a star - the amount of energy (light) that a star emits from its surface.
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∙ 8y ago
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∙ 12y agoIn terms of distance stars can be measured in AU (Astronomical Units), Parsecs, or lightyears (most common). In terms of mass they use the mass of the sun times the mass of the star, so a star that is 100 times the mass of our sun would be measured as 100M where M is a placeholder for the mass of our sun.
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∙ 15y agoStars was ranked according to their temperature, color and it's their characteristics.
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∙ 15y agoStars are measured on what is called a Hertzsprung-Russel Diagram, which catagorizes them according to luminosity, temperature, and size.
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∙ 10y agoThe brightness of stars for the non professional is compared based on their colors. For the astronomer, it is actually a measurement using highly sensitive photo devices.
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∙ 14y agoDistance, movement, and magnitude.
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∙ 11y agomagnitude I think
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How does the hertzsprung Russell diagram classify stars?
increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature
What does the HR diagram do?
It shows certain key characteristics (brightness, and temperature) of stars.
Are stars different sizes and brightness?
Yes! Some stars are supergiants, which means that they are high-mass stars. They explode in a supernova towards the end of their life. These stars are generally brighter than others. A star's brightness also depends on its temperature. Red stars are the coolest temperature, followed by orange, yellow, white and blue stars.
What location on the graph best represents a star with average brightness and temperature?
Stars' brightness and temperature are typically represented on a Hertzsprung-Russell (H-R) diagram. An average star like the Sun would be located on the "Main Sequence" portion of the graph, where brightness increases as temperature increases.
What variables are on the H-R diagram?
The Hertzsprung-Russell diagram is a scatter graph of known stars. It shows the absolute magnitudes (actual brightness at a set distance) versus the spectral type or classification (which is effectively what their temperature is). Stars, when plotted onto this graph, tend to fall into set patterns. The position of a star within a pattern (or sequence) can give further information, such as how old the star is.
In main-sequence stars how does brightness relate to temperature?
The brightness is very similar to the temperature, the brightness relies on the temperature
Temperature and brightness of stars are indicated by what?
by me and you
IN main sequence stars what is the relationship between brightness and temperature?
Brightness tells you the temperature and mostly temperature would tell the brightness of the star that we are talking about.
The temperature and brightness of stars are indicated by?
its color :)
What is the temperature and brightness of stars indicated by?
color
What indicates a stars temperature and brightness?
its color
What are the temperature and brightness of stars are indicated?
Their Color!(:
What affects the brightness of stars?
relative "brightness" is based on distance, size, and temperature
What determines how bright stars are?
Size and temperature determine the brightness of stars.
What are the temperature and brightness of stars indicated by?
Their Color!(:
The temperature and brightness of stars are indicated by their what?
They are indicated by their color.
How do scientist determine the surface temperature of the stars?
brightness
