The relationship between a star's temperature and brightness was discovered independently around 1910 by Ejnar Hertzsprung and Henry Norris Russell. The relationship between these to parameters is depicted in a Hertzsprung-Russell diagram or H-R diagram.
The first to classify stars by their brightness was the Greek astronomer Hipparchus in the 2nd century BC. He ranked stars based on their apparent magnitude, with 1 being the brightest and 6 being the faintest.
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It is generally believed Hipparchus was the first to classify stars by their brightness
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hipparchus
increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature
Scientists classify stars by size based on their mass. Stars can be categorized as dwarf stars (like our Sun), giant stars, or supergiant stars, with the size increasing as the mass of the star increases. The classification can also include specific categories such as red dwarfs, white dwarfs, or blue giants, depending on additional characteristics.
The HR diagram compares the luminosity (brightness) of stars against their surface temperature or spectral type. This plot helps astronomers classify stars based on their intrinsic characteristics and evolutionary stages.
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you classify stars by color, temperature, size, composition, and brightness.
increase in absolute brightness as they increase in temperature.Increase in brightness as they increase in temperature
Scientists use color, size, brightness, and temperature to classify stars.
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The three characteristic are temperature, size, and brightness.
The four variables astronomers use to classify stars are temperature, luminosity, size or radius, and mass. By analyzing these properties, astronomers can determine a star's position on the Hertzsprung-Russell diagram and classify it into different spectral types and stages of stellar evolution.
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.
Scientists classify stars based on their luminosity, temperature, size, and color. These characteristics help determine where a star falls on the Hertzsprung-Russell diagram, which provides insight into its evolutionary stage and lifespan.
The surface temperature and the absolute magnitude, which is the brightness of the star when viewed from a standard distance of 10 parsecs.
No. Stars vary greatly in size and brightness.
Scientists classify stars by size based on their mass. Stars can be categorized as dwarf stars (like our Sun), giant stars, or supergiant stars, with the size increasing as the mass of the star increases. The classification can also include specific categories such as red dwarfs, white dwarfs, or blue giants, depending on additional characteristics.