Lab 8-8
Hertzsprung-Russell (H-R) diagram
A diagram that classifes the stars based on luminosity, color, surface temperature,and size
Supergiant star
A large low density star that is hundreds of times more luminous than a red giant
How does a stars color change as its temperature increases
A stars color changed as its temperature increases by changing into a lighter tone
Why does a cool distant supergiant star such as Betelgeuse have such a high apparent magnitude
A supergiant star such as Betelgeuse has such a high apparent magnitude because....
Referring to the H-R diagram describe the sun in terms of actual magnitude temperature Color and spectral class
Absolute magnitude of 4.9, temperature of 5,800K, color is yellow and spectral class is G2
According to the "luminosity and temperature of stars" chart in the appendix how much brighter is Rigel than the sun
According to the " luminosity and temperature of stars" chart Rigel is 10,000 times brighter than the sun
main sequence
Average size star that's in the early stage of development
If deneb and Rigel were located at alpha Centauri's distance from earth how would they appear
If deneb and Rigel were located at alpha centauri's distance from earth they would appear less luminous than a normal supergiant would appear because of the major difference between absolute magnitudes
Dwarf star
Stars of an absolute magnitude of +1 or less
What would be the absolute magnitude and color of main sequence star with a temperature
The absolute magnitude of this star would be 13.2. The color of the star would be red
Luminosity
The actual or true brightness of a star
absolute magnitude
The apparent magnitude of a star of placed 32.6 light years from the sun
Referring to the main sequence stars on the H-R diagram, what is the relationship between star temperature and absolute magnitude
The relationship between star temperature and absolute magnitude is the more increased in temperature the more luminosity a star has
How can stars be classified using the hertzsprung-russell diagram?
Using the hertzsprung-Russell diagram stars could be classified by spectral class based on color, temperature, and size
Considering the relatively high temperatures of some nearby white dwarf stars why do they have low absolute magnitude
White dwarf stars have such low absolute magnitudes because dwarf stars have a absolute magnitude of +1 or less
Apparent magnitude
how bright a star appears to an observer on earth
