How Is the Temperature of a Star Determined

The surface temperature of the stars is determined using Wiens displacement law. The temperature of a star is determined for its colour spectrum.

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Measure the relative strengths of spectral lines to determine a stars spectral class for example OBAFGKM.

. To get a st. The color and temperature of a star are determined by the fusion. How does Wiens law determine temperature.

Weins displacement law states that T 1λ m. A stars luminosity depends on the stars temperature and size and both of those things are determined by the stars mass. Careful measurements of a stars light spectrum gives astronomers clues about its temperature.

The wavelength corresponding to the maximum energy of radiation is related to the temperature of the radiating body by the relation. Also the apparent color of a star gives you a measurement of its temperature but more accurate classification usually requires a high quality spectrum. If both the assertion and reason are true and reason is a correct explanation of the assertion.

6 Luminosity is a measure of a stars power output energy per second. If both assertion and reason are but assertion is not a correct explanation of the assertion. We can calculate the luminosity mass radius and average density of these stars.

4 A stars temperature can be determined by measuring the spectrum color of the star. For example incandescent bodies that have a red glow are cool while bodies with a yellow or blue color are hot. According to this law λm T b where b is Wiens constant whose value is 2898 103 mK.

In addition we can also calculate how long Hydrogen-Burning stars will take to exhaust their hydrogen fuel. Spectral class corresponds to temperature. A Gravitational compression and pressure.

4 A stars temperature can be determined by measuring the spectrum color of the star. The hotter the star the more the spectrum is towards blue where as a cooler star has a spectrum closer to red. Therefore as on earth we observe the spectra of the radiation emitted by the star we observe that a particular wavelength has maximum intensity.

λ m 1 T. This can be written mathematically as. Therefore the correct option here is option B.

λ T c o n s t. How is the temperature of a star determined. This is Wiens displacement law and can be used to determine the temperature of stars.

Show more Science Astronomy This question was created from review 9docx Answer Explanation. The temperature of stars is determined by A Stefans law B Wiens displacement law C Kirchhoffs law D Ohms law Easy Solution Verified by Toppr Correct option is B We can analyze the radiation coming from stars and obtain the energy distribution over the wavelengths of. This wavelength directly gives the idea about the temperature of the star.

What is luminosity and what two characteristics of a star determine its luminosity 6 Luminosity is a measure of a stars power output energy per second. Blue star is at high temperature than red star. One summary comment about this discussion is that stars can be roughly classified by their colors since the spectral types are arranged by temperature.

This can be made more precise by measuring very carefully exactly how much light a star produces at many different wavelengths. Use computer models and temperature to determine elemental abundances from relative strengths of absorption lines in a stars spectrum. The law is given by T2910-3 mK where is maximum intensity wavelength and T is absolute temperature 3K views View upvotes Geoff Wood Bsc Astrophysics Updated 3 years ago Author has 131 answers and 1838K answer views.

The surface temperature of stars is determined using Wiens displacement law. What determines the temperature in the core of a star. The size of a star depends on the mass that accompanies its formation and the rate at which reactions take place within the star.

B Gravitational compression and then the amount of heat energy generated by the resulting pressure. Main sequence stars as seen in the Hertzsprung Russell HR diagram include stars that are in their Hydrogen-Burning phase like our Sun. To the extent that Stellar spectra look like blackbodies the temperature of a star can also be measured amazingly accurately by recording the brightness in two different filters.

C Pressure and nuclear fusion.

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A Hertzsprung Russell H R Diagram Sirius B Physics Sirius