USAAAO 2022, I кръг — Задача 1

USAAAO 2022 - First Round · 5 февруари 2022 г.

Условие

Classify the following galaxies according the Hubble galaxies classification:

Colour photograph of a face-on spiral galaxy with a large bright yellowish central bulge and tightly wound spiral arms, on a black background.
Figure 1: Galaxy 1
Colour photograph of a spiral galaxy with a prominent central bar and two open, loosely wound arms extending from the ends of the bar, on a starry background.
Figure 2: Galaxy 2
Colour photograph of a distorted galaxy with a bright, dusty centre, a disturbed disc and a long faint tail curving down to the lower left, on a starry background.
Figure 5: Galaxy 5

(a) Sb, Sc, Peculiar, E2, Irregular

(b) Sbc, E4, Irregular, Sb, Peculiar

(c) E3, Sbc, Sa, Peculiar, Irregular

(d) Sc,Sba, Sbc, E2, Peculiar

(e) Sa, Sbb, E3, Irregular, Peculiar

Colour photograph of a smooth, slightly elongated elliptical galaxy with a bright centre and some dark dust patches near the core, on a dark background with a few stars.
Figure 3: Galaxy 3
Colour photograph of a shapeless, clumpy galaxy of bluish star clusters without spiral arms or bulge; a small reddish elongated galaxy appears near the bottom.
Figure 4: Galaxy 4

Отговори

Решение

Оригинал в Архива: usaaao_first_exam_2022_problems.pdf · официални решения: usaaao_first_exam_2022_solutions-1.pdf