Which one of the following statements is correct for an isolated star (i.e. ,a star that is not in a binary star system)?
A) It is not possible to measure the star's mass accurately.
B) There are several ways to measure its mass accurately.
C) Its mass can be measured accurately only if its luminosity and temperature can be measured.
D) Its mass can be measured accurately only if its distance can be found.

Question

Quizplus · Accepted Answer

The mass of an isolated star cannot be measured directly and accurately because the most reliable method to measure a star's mass involves observing its gravitational interaction with another object, such as in a binary star system. Without another object to interact with, the mass cannot be determined accurately through direct observation.

Which One of the Following Statements Is Correct for an Isolated