Zooming in on Star Formation

Discovered in the year 1836 by John Herschel, NGC 6902 is a beautiful spiral galaxy located more than 130 million light-years away in the constellation of Sagittarius, the Archer. This image was taken with MUSE, the Multi Unit Spectroscopic Explorer instrument attached to one of the four 8.2-metre telescopes that make up the VLT, and shows the galaxy from a unique perspective. A zoom in towards the galaxy’s centre, the image shows a nuclear ring where the orange glow of intense star formation is visible. 

Inside this ring lies a faint and small bar of stars. Researchers found that stars within it are distributed differently depending on their age, with younger stars aligned along the bar and older stars more dispersed. These locations of the young and old stars within the central bar of NGC 6902 confirm predictions made years earlier from simulations and models. This is the first time these predictions of galactic structure were confirmed with observations thanks to the incredible spatial resolution of the MUSE instrument.

Припис:

Про зображення

ID:potw2106a
Тип:Спостереження
Дата релізу [date]:08 лютого 2021 р. 06:00
Розмір:317 x 326 px

Про об’єкт

Назва:NGC 6902
Тип:Local Universe : Galaxy : Type : Spiral
Відстань:130 мільйонів світлових років
Constellation:Sagittarius
Категорія:Galaxies

Формати зображень


Масштаб


Шпалери

1024x768
149,3 Кб
1280x1024
205,0 Кб
1600x1200
257,6 Кб
1920x1200
277,9 Кб
2048x1536
351,3 Кб

Координати

Position (RA):20 24 28.17
Position (Dec):-43° 39' 13.25"
Field of view:1.06 x 1.09 arcminutes
Орієнтація:Північ на 0.1° права від вертикалі

Кольори та фільтри

ДіапазонДовжина хвиліТелескоп
Оптичний
B
438 nmVery Large Telescope
MUSE
Оптичний
g
475 nmVery Large Telescope
MUSE
Оптичний
r
625 nmVery Large Telescope
MUSE
Оптичний
H-alpha
656 nmVery Large Telescope
MUSE
Оптичний
N II
658 nmVery Large Telescope
MUSE