Every star has certain properties that help to define it. Some of the main properties of stars are: Surface Temperature: The amount of heat on the surface of a star The amount of energy a star gives off each Luminosity: second The size of a star; specifically, the distance between the center and surface of the star Radius: Mass: The amount of material in a star The luminosity of a star is related to its temperature and radius. Hotter stars are more luminous (give off more light) than cooler stars of the same size. Similarly, if two stars are at the same temperature, the larger star will be more luminous. The mathematical formula that describes how these properties are related is: La T*R? (2) Luminosity x (Temperature)* x (Radius)? (3) Let's do an example to understand what this proportionality means. 2) In question 9), you found out how many times hotter Star A is than Star B. Assuming that Star A and Star B are the same size, how many times more luminous is Star A than Star B? (Hint: Calculate the ratio, A.) Show your work below. LB
Every star has certain properties that help to define it. Some of the main properties of stars are: Surface Temperature: The amount of heat on the surface of a star The amount of energy a star gives off each Luminosity: second The size of a star; specifically, the distance between the center and surface of the star Radius: Mass: The amount of material in a star The luminosity of a star is related to its temperature and radius. Hotter stars are more luminous (give off more light) than cooler stars of the same size. Similarly, if two stars are at the same temperature, the larger star will be more luminous. The mathematical formula that describes how these properties are related is: La T*R? (2) Luminosity x (Temperature)* x (Radius)? (3) Let's do an example to understand what this proportionality means. 2) In question 9), you found out how many times hotter Star A is than Star B. Assuming that Star A and Star B are the same size, how many times more luminous is Star A than Star B? (Hint: Calculate the ratio, A.) Show your work below. LB
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first pic is for ur reference. already know star A is 1.75 times hotter
Transcribed Image Text:Every star has certain properties that help to define it. Some of the main properties of
stars are:
Surface Temperature:
The amount of heat on the surface of a star
The amount of energy a star gives off each
Luminosity:
second
The size of a star; specifically, the distance
Radius:
between the center and surface of the star
Mass:
The amount of material in a star
The luminosity of a star is related to its temperature and radius. Hotter stars are more
luminous (give off more light) than cooler stars of the same size. Similarly, if two stars are
at the same temperature, the larger star will be more luminous. The mathematical formula
that describes how these properties are related is:
Lx TR?
(2)
4
2
Luminosity x (Temperature) x (Radius)?
(3)
Let's do an example to understand what this proportionality means.
2) In question 9), you found out how many times hotter Star A is than Star B. Assuming
that Star A and Star B are the same size, how many times more luminous is Star A than
Star B? (Hint: Calculate the ratio, A.) Show your work below.
LB
Transcribed Image Text:9) Now, use Wien's law to calculate the answer to the following statement without looking
up the constant, showing your work below: (Hint: Use a ratio to find TA/TB)
The hotter star is
times hotter than the cooler star.
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