Lêer:Wolf rayet2.jpg

Grootte van hierdie voorskou: 571 × 599 piksels. Ander resolusies: 229 × 240 piksels | 611 × 641 piksels.

Oorspronklike lêer ‎(611 × 641 piksels, lêergrootte: 606 KG, MIME-tipe: image/jpeg)

Hierdie lêer kom vanaf Wikimedia Commons en kan ook in ander projekte gebruik word. Die beskrywing op die lêer se inligtingsblad word hieronder weergegee.

Beskrywing

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.

Datum

Maart 1997

Bron

http://hubblesite.org/newscenter/archive/releases/1998/38/image/a/ (direct link)

Outeur

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

Toestemming
(Hergebruik van die lêer)

This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use.
The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.

Lêergeskiedenis

Klik op die datum/tyd om te sien hoe die lêer destyds gelyk het.

	Datum/Tyd	Dimensies	Gebruiker	Opmerking
huidig	10:05, 1 Februarie 2010	611 × 641 (606 KG)	Tryphon	Original size, from http://hubblesite.org/newscenter/archive/releases/1998/38/image/a/.
	12:36, 18 Oktober 2008	1 122 × 1 179 (349 KG)	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
	14:08, 27 Augustus 2005	360 × 378 (70 KG)	Joonasl	HST image of a Wolf-Rayet star {{PD-USGov-NASA}} Category:astronomy