Assuming that we can measure the apparent brightness of a star, what does the inverse square law for light allow us to do?
A) determine the distance to the star from its apparent brightness
B) determine both the star's distance and luminosity from its apparent brightness
C) calculate the star's surface temperature if we know either its luminosity or its distance
D) calculate the star's luminosity if we know its distance, or calculate its distance if we know its luminosity
Question 2
What is the Tully-Fisher relation?
What will be an ideal response?
Artist's conception of the birth of a star within a dense molecular cloud.
A crescent Moon and "star"
Balmer Lines in the Spectrum of a Star
The Land Ordinance of 1785 called for surveying and dividing the Western Territories into square mil
Punnett Square
Mottled Sea Star (Evasterias troschelii) eating a clam, Alaska.