Multiple Choice
What is the only way to measure directly the mass of a star accurately?
A) Measure its distance using trigonometric parallax and its brightness using photometry.
B) It is not possible to measure the mass of a star.
C) Measure its spectral type and luminosity class, then use the H-R diagram.
D) Measure its gravitational effect on another object.
Correct Answer:
Verified
Correct Answer:
Verified
Q241: How do astronomers measure the masses of
Q242: The first accurate measurement of stellar parallax
Q243: Two stars in Earth's sky have the
Q244: A star whose absolute magnitude M is
Q245: Parallax of a nearby star is used
Q247: The surface temperature of a nearby star
Q248: If a distant cluster were to be
Q249: Which of these statements about measuring the
Q250: The intensity of sunlight per square meter
Q251: The faintest stars observable through the largest