Crash of the titans

NGC 520 — also known as Arp 157 — looks like a galaxy in the midst of exploding. In reality, it’s the exact opposite. Two enormous spiral galaxies are crashing into each other, melding and forming a new conglomerate. This happens slowly, over millions of years — the whole process started some 300 million years ago. The object, about 100 000 light-years across, is now in the middle stage of the merging process, as the two nuclei haven’t merged yet, but the two discs have. The merger features a tail of stars and a prominent dust lane. NGC 520 is one of the brightest interacting galaxies in the sky and lies in the direction of Pisces (the Fish), approximately 100 million light-years from Earth.

This image was taken by the ESO Faint Object Spectrograph and Camera attached to the 3.6-metre telescope at La Silla in Chile. It is based on data obtained through B, V, R and H-alpha filters.

Предоставлено:

ESO

Об изображении

ID:potw1048a
Тип:Наблюдение
Дата выпуска релиза [date]:29 ноября 2010 г. 10:00
Размер:959 x 959 px

Об объекте

Название:Arp 157, NGC 520
Тип:Local Universe : Galaxy : Type : Interacting
Расстояние:100 миллионов световых лет
Constellation:Pisces
Категория:Galaxies

Форматы изображений

Большой JPEG
190,2 КБ

Обои

1024x768
159,3 КБ
1280x1024
267,3 КБ
1600x1200
399,9 КБ
1920x1200
477,7 КБ
2048x1536
637,2 КБ

Координаты

Position (RA):1 24 34.75
Position (Dec):3° 47' 30.00"
Field of view:5.04 x 5.04 arcminutes
Ориентация:Север на 0.9° справа от вертикали

Цвета и фильтры

ДиапазонДлина волныТелескоп
Оптический
B
445 nmESO 3.6-metre telescope
EFOSC2
Оптический
V
551 nmESO 3.6-metre telescope
EFOSC2
Оптический
H-alpha
1.63 μmESO 3.6-metre telescope
EFOSC2
Оптический
R
658 nmESO 3.6-metre telescope
EFOSC2

 

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