IOAA 2013, Отборен тур, хоризонтални въпроси — Задача 6. F
IOAA 2013 — Team Competition: Horizontal questions · 17 т.
Условие
i. A binary system is consisted of two stars that revolve around the centre of mass with semi-major axes of 11.25 A.U. And 18.62 A.U. If the total mass of the system is 5 solar masses, calculate the period (in years) of the system. (integer) [2 т.]
ii. Ptolemy’s Cluster is M_. [1 т.]
iii. What will be the diameter of the telescope (in meters) required to resolve a planet revolving around a star with orbital radius 1 A.U., if the distance to star is 226.26 light years? Ignore seeing. (one decimal) [2 т.]
iv. Castor is a multiple star of how many components? [1 т.]
v. The picture shows SNR _. [4 т.]
vi. Luminosity class of sub-dwarfs [1 т.]
vii. Alcyone, Taygeta, Maia, Electra, Atlas [5 т.]
viii. Luminosity class of the Sun [1 т.]
Отговори
i. 73
Answer code as printed after the points (digits only, without decimal point or units).
ii. 7
Answer code as printed after the points (digits only, without decimal point or units).
iii. 96
Answer code as printed after the points (digits only, without decimal point or units).
iv. 6
Answer code as printed after the points (digits only, without decimal point or units).
v. 1054
Answer code as printed after the points (digits only, without decimal point or units).
vi. 6
Answer code as printed after the points (digits only, without decimal point or units).
vii. 51836
Answer code as printed after the points (digits only, without decimal point or units).
viii. 5
Answer code as printed after the points (digits only, without decimal point or units).
Решение
Внимание: Непълно решение
No worked solutions in the archive; only the answer codes printed after each question are available.
i. [2] - 73
ii. [1] - 7
iii. [2] - 96
iv. [1] - 6
v. [4] - 1054
vi. [1] - 6
vii. [5] - 51836
viii. [1] - 5
Оригинал в Архива: Horizontal_questions.pdf