Westerlund 2

約 3,000 個の若い恒星で、天の川銀河で最も高温で明るいものも含まれ、生まれた雲に空洞を刻んでいます。Hubble 25 周年記念画像です。

画像はその距離に地球の方を向けて、空で見える大きさのまま掛けています。天体の奥行きは見えないため、平面です。

撮影

Hubble Space Telescope

画像の幅

約 43 ly

太陽から

20,000 光年

赤経 / 赤緯

156.03° / -57.76°

クレジット

NASA, ESA, the Hubble Heritage Team (STScI/AURA), A. Nota (ESA/STScI), and the Westerlund 2 Science Team The original observations of Westerlund 2 were obtained by the science team: Antonella Nota (ESA/STScI), Elena Sabbi (STScI), Eva Grebel and Peter Zeidler (Astronomisches Rechen-Institut Heidelberg), Monica Tosi (INAF, Osservatorio Astronomico di Bologna), Alceste Bonanos (National Observatory of Athens, Astronomical Institute), Carol Christian (STScI/AURA) and Selma de Mink (University of Amsterdam). Follow-up observations were made by the Hubble Heritage team: Zoltan Levay (STScI), Max Mutchler, Jennifer Mack, Lisa Frattare, Shelly Meyett, Mario Livio, Carol Christian (STScI/AURA), and Keith Noll (NASA/GSFC).

Westerlund 2 is an obscured compact young star cluster in the Milky Way, with an estimated age of about one or two million years. It contains some of the hottest, brightest, and most massive stars known. The cluster resides inside H II region RCW 49, located 20,000 light-years away in the constellation Carina. It is half a degree from the naked eye Cepheid variable V399 Carinae.

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