Which of these statements about measuring the mass of an isolated star (a star that is not in a binary star system) is CORRECT?
A) The mass of the star can be measured accurately in several ways.
B) The mass of the star can be measured accurately only if its luminosity and temperature can be measured.
C) The mass of the star can be measured accurately only if its distance can be found.
D) The mass of the star cannot be measured accurately.

Question

Quizplus · Accepted Answer

The mass of an isolated star cannot be measured directly and accurately because the most reliable method to measure stellar mass involves observing the gravitational interaction between two or more bodies, such as in binary star systems. Without a companion to provide gravitational effects to analyze, there's no direct way to measure the mass of an isolated star accurately.

Which of These Statements About Measuring the Mass of an Isolated