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File:Wolf rayet2.jpg

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原始文件 (611 × 641像素,文件大小:606 KB,MIME类型:image/jpeg


描述

This NASA Hubble Space Telescope picture of the energetic star WR124 reveals it is surrounded by hot clumps of gas being ejected into space at speeds of over 100,000 miles per hour.

Also remarkable are vast arcs of glowing gas around the star, which are resolved into filamentary, chaotic substructures, yet with no overall global shell structure. Though the existence of clumps in the winds of hot stars has been deduced through spectroscopic observations of their inner winds, Hubble resolves them directly in the nebula M1-67 around WR124 as 100 billion-mile wide glowing gas blobs. Each blob is about 30 times the mass of the Earth.

The massive, hot central star is known as a Wolf-Rayet star. This extremely rare and short-lived class of super-hot star (in this case 50,000 degrees Kelvin) is going through a violent, transitional phase characterized by the fierce ejection of mass. The blobs may result from the furious stellar wind that does not flow smoothly into space but has instabilities which make it clumpy.

The surrounding nebula is estimated to be no older than 10,000 years, which means that it is so young it has not yet slammed into the gasses comprising the surrounding interstellar medium.

The star is 15,000 light-years away, located in the constellation Sagitta. The picture was taken with Hubble's Wide Field Planetary Camera 2 in March 1997. The image is false-colored to reveal details in the nebula's structure.
日期
来源 http://hubblesite.org/newscenter/archive/releases/1998/38/image/a/ (direct link)
作者 Yves Grosdidier (University of Montreal and Observatoire de Strasbourg), Anthony Moffat (Universitie de Montreal), Gilles Joncas (Universite Laval), Agnes Acker (Observatoire de Strasbourg), and NASA
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(二次使用本文件)
Public domain
此文件属于公有领域,因为它是由NASAESA创建的。NASA哈勃望远镜资料(以及2009年之前的ESA哈勃望远镜资料)不受版权保护,可以像公有领域资料一样自由使用,但前提是必须注明NASA、STScI和/或ESA为资料来源。如果使用的是2008年之后创建的ESA资料或来自其他机构的资料,则此许可不适用。

本材料由太空望远镜科学研究所根据合同NAS5-26555为NASA制作,或由哈勃欧洲航天局信息中心为ESA制作。版权声明见hubblesite.org2008版权声明见spacetelescope.org

对于自2009年以来由欧洲航天局在spacetelescope.org网站上创建的内容,请使用{{ESA-Hubble}}标签。

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3月 1997

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当前2010年2月1日 (一) 10:052010年2月1日 (一) 10:05版本的缩略图611 × 641​(606 KB)TryphonOriginal size, from http://hubblesite.org/newscenter/archive/releases/1998/38/image/a/.
2008年10月18日 (六) 12:362008年10月18日 (六) 12:36版本的缩略图1,122 × 1,179​(349 KB)Henrykus{{Information |Description= HST image of Wolf-Rayet star WR 124 surrounded by M1-67 nebula. |Source= http://rst.gsfc.nasa.gov/Sect20/A6.html description from http://heasarc.gsfc.nasa.gov/docs/objects/heapow/archive/transients/march03_grbs.html |Date= |Au
2005年8月27日 (六) 14:082005年8月27日 (六) 14:08版本的缩略图360 × 378​(70 KB)JoonaslHST image of a Wolf-Rayet star {{PD-USGov-NASA}} Category:astronomy

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