USAAAO 2018, I кръг — Задача 16
USAAAO National Astronomy Olympiad First Round 02/12/2018-02/16/2018 Time Limit: 75 Minutes · 12 февруари 2018 г. · 1 т.
Внимание: Бележка към темата
The solutions document provides answer letters for all 30 problems and brief explanations for some problems.
Условие
Which of the following are not high mass stars (relative to the others)?
A. Wolf-Rayet stars
B. Type-II supernova progenitors
C. Cepheid variable
D. Red dwarfs
E. Red supergiants
Решение
Answer: D
Оригинал в Архива: usaaao-first-round-exam-2018.pdf · официални решения: usaaao_first_round_2018.pdf