The star Vega has an absolute magnitude of about 4 and an apparent magnitude of about 0. Based on the definitions of absolute and apparent magnitude, we can conclude that
A. Vega is nearer than 10 parsecs from Earth.
B. Vega has a parallax angle of 1/10 arcsecond.
C. Vega's luminosity is less than that of our Sun.
D. Vega's surface temperature is cooler than the Sun.
Answer:A
The star Vega has an absolute magnitude of about 4 and an apparent magnitude of about 0. Based on the definitions of absolute and apparent magnitude, we can conclude that
A. Vega is nearer than 10 parsecs from Earth. B. Vega has a parallax angle of 1/10 arcsecond. C. Vega's luminosity is less than that of our Sun. D. Vega's surface temperature is cooler than the Sun.