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Why does a star's spectral clssification depend on it's temperature?
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What is spectral class?
Spectral class is classification of stars by their external features..Like light,temperature etc..
Why are stars yellow?
Some stars appear yellow because either they are yellow or the white color can appear different. The spectral types F and G (our sun), contain yellow stars. This is caused by their temperature.
How do we find out the composition of stars?
Spectral analysis.
What spectral type of star that is still around formed longest ago?
Spectral type M Stars
Does the H-R diagram classify stars by the amount of heat they create?
The Hertzsprung-Russell diagram (H-R diagram) is a graph of stars showing the stars' luminosities or absolute magnitude versus their spectral type which is related to their effective temperature.
Is spectral type k hotter then spectral type a?
No. K spectral type stars (which are orange) temperature is ranging from 5,000-3,500. A spectral type stars (which are blue-white) temperature is ranging from 7,500-11,000.
What is spectral class?
Spectral class is classification of stars by their external features..Like light,temperature etc..
What is used to help humans determine temperature of the stars?
spectral analysis
What used to help humans determine the temperature of stars?
spectral analysis
Two stars of the same spectral class must have the same what?
temperature
How do you determine a stars temperature?
By analysing it's spectral characteristics. See link for more information
Why are there no massive O and B stars?
There are stars with spectral classes of O & B (e.g. Rigel) R136a1 is a star of the spectral class WN5h. Wolf Rayet stars have this kind of spectral type.
Why are the scientists calling Mars the red planet?
In astronomy, stars of spectral type M (the stars with the coolest temperature) are classified as red stars. Mars is called the Red Planet because of the reddish color
Why are stars yellow?
Some stars appear yellow because either they are yellow or the white color can appear different. The spectral types F and G (our sun), contain yellow stars. This is caused by their temperature.
Is spectral class B in space hot or cold?
Spectral class is the categorization of stars by temperature and size, mostly the former. Spectral class B is very hot. In descending order (hottest to coolest) the spectral classes are O,B,A,F,G,K,M. You can see that B is very near the top.
How do we find out the composition of stars?
Spectral analysis.
What is the least luminous spectral class?
Spectral class Y, which is typical of "brown dwarf" stars.
