USAAAO 2015, I кръг — Задача 9
USAAAO First Round 2015
Условие
Which two properties of galaxies does the Tully-Fisher relation utilize a correlation between?
a. Luminosity and velocity dispersion
b. Luminosity and rotational velocity
c. Radius and metallicity
d. Luminosity and metallicity
e. Mass and surface brightness
Отговори
- b
Решение
Answer: b
Оригинал в Архива: 2015-first-round-exam.pdf · официални решения: 2015-first-round-solutions.pdf