Wide Field Imager image of Westerlund 1 (annotated)

This image of the young star cluster Westerlund 1 was taken with the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile. This remarkable cluster contains hundreds of very massive stars, some shining with a brilliance of almost one million suns. Although most stars in the cluster are hot blue supergiants, they appear reddish in this image as they are seen through interstellar dust and gas. European astronomers have for the first time demonstrated that the magnetar — an unusual type of neutron star with an extremely strong magnetic field — that lies in the cluster was formed from a star with at least 40 times as much mass as the Sun. The result presents great challenges to current theories of how stars evolve, as a star as massive as this was expected to become a black hole, not a magnetar.

Предоставлено:

ESO

Об изображении

ID:eso1034b
Тип:Наблюдение
Дата выпуска релиза [date]:18 августа 2010 г. 12:00
Связанные релизы:eso1034
Размер:1261 x 1261 px

Об объекте

Название:Westerlund 1
Тип:Milky Way : Star : Evolutionary Stage : Neutron Star : Magnetar
Milky Way : Star : Grouping : Cluster
Расстояние:15000 световых лет
Constellation:Ara
Категория:Star Clusters

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Координаты

Position (RA):16 47 4.02
Position (Dec):-45° 51' 5.46"
Field of view:5.00 x 5.00 arcminutes
Ориентация:Север на 0.1° справа от вертикали

Цвета и фильтры

ДиапазонТелескоп
Оптический
B
MPG/ESO 2.2-metre telescope
WFI
Оптический
V
MPG/ESO 2.2-metre telescope
WFI
Оптический
R
MPG/ESO 2.2-metre telescope
WFI

 

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