Star spectra and star color relation

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Discussion Overview

The discussion revolves around the relationship between star spectra, color, and temperature. Participants explore how these elements interact and the extent to which spectra contribute to perceived color in stars.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions whether a star's spectrum influences its color or if color is primarily determined by temperature.
  • Another participant asserts that the spectrum of a star is mainly a function of its surface temperature, suggesting that the color perceived is due to higher intensity of blue and purple light in hotter stars.
  • A third participant introduces a definition of "spectrum," indicating that the terms temperature and color may be ambiguous in scientific contexts.
  • A later reply reiterates the previous point about temperature being the primary factor for color, emphasizing the role of intensity in different parts of the spectrum.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between spectra and color, with some emphasizing temperature as the primary factor while others highlight potential ambiguities in terminology. The discussion remains unresolved regarding the exact contributions of spectra to color perception.

Contextual Notes

There are indications of ambiguity in the definitions of temperature and color, as well as the role of spectra in determining color, which may affect the clarity of the discussion.

nmsurobert
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I'm reading about star spectra, color, and temperature and have a question...

I understand that very hot stars burn blue because a lot of the radiation is on the UV end so it appears more blue when its ran through several color filters. and the opposite applies for cool stars that are skewed towards IR. but does the stars spectra have anything to do with its color or does color mostly come from temperature?

thanks!
 
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The spectrum of a star is primarily a function of the temperature of its surface, with individual emission and absorption lines being secondary and only barely contributing to its color. Unfiltered light from a very hot star appears bluish because the intensity of the visible light at the blue and purple end of the spectrum is higher than that of the orange and red end, which is the result of its very high surface temperature.
 
The word spectra is the plural form of spectrum, which is commonly defined as 'The spectrum is the range of different colors which is produced when light passes through a glass prism or through a drop of water.' So it is safe to conclude the terms temperature and color are ambiguous in science.
 
Drakkith said:
The spectrum of a star is primarily a function of the temperature of its surface, with individual emission and absorption lines being secondary and only barely contributing to its color. Unfiltered light from a very hot star appears bluish because the intensity of the visible light at the blue and purple end of the spectrum is higher than that of the orange and red end, which is the result of its very high surface temperature.
Ah ok. Awesome. Thanks!
 

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