IAO 2016, Наблюдения — Задача 11. Task 11
2016 IAO observational round – question sheet · 4 т.
Внимание: Бележка към темата
Task 12 requires a video clip that is not present in the supplied archive PDFs. Its printed official answer is available below.
2016 IAO observational round – question sheet
Duration: 40 min (tasks 8-11) + 6 min (task 12)
Условие
This image of a field around a quasar is obtained with a 35-cm telescope.
It is one of the following four quasars (on the finder charts on Fig. 5):
11.1. Which quasar is on the image? Identify the field and circle the correct answer.
Answer: 3C 66A / OJ 287 / 3C 454.3 / PKS 1510-08 [1 т.]
11.2. What changes have to be made in the equatorial coordinates of the telescope in order to put the quasar in the center of the field?
Answer: _________ _________ [2 т.]
11.3. Approximate distances to some field stars are indicated on the charts in parsecs. Estimate roughly the distance to the quasar:
Answer: _________ pc [1 т.]
Решение
11.1. Which quasar is on the image? Identify the field and circle the correct answer.
Answer: OJ 287 1 pt
11.2. What changes have to be made in the equatorial coordinates of the telescope in order to put the quasar in the center of the field?
Answer: (the signs matter!) 2 pts
11.3. Approximate distances to some field stars are indicated on the charts in parsecs. Estimate roughly the distance to the quasar:
0 pts: Mpc or Gpc
0.5 pts: Mpc
1 pt: Mpc – 15 Gpc
A trick question. The actual quasar is at z=0.306, corresponding to a distance of ~1 Gpc, which cannot be derived from the charts. The nearest active quasar known is at a distance of ~180 Mpc.
Теми и трудност
Трудност: неоценена.
Небесна сфера и сферична астрономия · Галактики и космология · Небесни координати · Звездни карти и съзвездия · Активни галактики и квазари
Предпоставки: Гимназиална подготовка, Разширена олимпиадна подготовка
Оригинал в Архива: observational_original.pdf · официални решения: obssol.pdf