Датотека:A giant, smouldering star.jpg

Садржај странице није подржан на другим језицима
Ово је датотека са Викимедијине оставе
С Википедије, слободне енциклопедије

A_giant,_smouldering_star.jpg ‎(501 × 501 пиксела, величина датотеке: 86 kB, MIME тип: image/jpeg)

Опис измене

Опис
English: This new image, snapped by NASA/ESA Hubble Space Telescope, shows the star HD 184738, also known as Campbell’s hydrogen star. It is surrounded by plumes of reddish gas — the fiery red and orange hues are caused by glowing gases, including hydrogen and nitrogen.

HD 184738 is at the centre of a small planetary nebula. The star itself is known as a [WC] star, a rare class resembling their much more massive counterparts — Wolf-Rayet stars. These stars are named after two French astronomers, Charles Wolf and Georges Rayet, who first identified them in the mid-nineteenth century.

Wolf-Rayet stars are hot stars, perhaps 20 times more massive than the Sun, that are rapidly blowing away material and losing mass. [WC] stars are rather different: they are low-mass Sun-like stars at the end of their lives. While these stars have recently ejected much of their original mass, the hot stellar core is still losing mass at a high rate, creating a hot wind. It is these winds that cause them to resemble Wolf-Rayet stars.

However, astronomers can look more closely at the composition of these winds to tell the stars apart; [WC] stars are identified by the carbon and oxygen in their winds. Some true Wolf-Rayet stars are rich in nitrogen instead, but this is very rare among their low-mass counterparts.

HD 184738 is also very bright in the infrared part of the spectrum, and is surrounded by dust very similar to the material that the Earth formed from. The origin of this dust is uncertain.

A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Jean-Christophe Lambry.
Датум
Извор http://www.spacetelescope.org/images/potw1337a/
Аутор

ESA/Hubble & NASA

Acknowledgement: Jean-Christophe Lambry

Лиценцирање

w:sr:Кријејтив комонс
ауторство
ауторство
 ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
Conditions:
  • The full image or footage credit must be presented in a clear and readable manner to all users, with the wording unaltered (for example: "ESA/Hubble"). Web texts should be credited to ESA/Hubble (except when used by media). The credit should not be hidden or disassociated from the image footage. Links should be active if the credit is online. See the usage rights Q&A section on the ESA copyright page for guidance.
  • ESA/Hubble materials may not be used to state or imply the endorsement by ESA/Hubble or any ESA/Hubble employee of a commercial product or service.
  • ESA/Hubble requests a copy of the product sent to them to be indexed in their archive.
  • If an image shows an identifiable person, using that image for commercial purposes may infringe that person's right of privacy, and separate permission should be obtained from the individual.
  • If images or visuals are changed significantly from the original work (apart from resizing, cropping), we suggest that the changes are mentioned after the credit line. For example "Original image by ESA/Hubble (M. Kornmesser), warping and recolouring by NN".

Notes:

  • Note that this general permission does not extend to the use of ESA/Hubble's logo, which shall remain protected and may not be used or reproduced without prior and individual written consent of ESA/Hubble.
  • Also note that music, scientific papers and code on the esahubble.org site are not released under this license and can not be used for non-ESA/Hubble products.
  • By reproducing ESA/Hubble material, in part or in full, the user acknowledges the terms on which such use is permitted.
w:sr:Кријејтив комонс
ауторство
Ова датотека је доступна под лиценцом Creative Commons Ауторство 4.0 међународна.
Ауторство: ESA/Hubble
Дозвољено је:
  • да делите – да умножавате, расподељујете и преносите дело
  • да прерађујете – да прерадите дело
Под следећим условима:
  • ауторство – Морате да дате одговарајуће заслуге, обезбедите везу ка лиценци и назначите да ли су измене направљене. Можете то урадити на било који разуман манир, али не на начин који предлаже да лиценцатор одобрава вас или ваше коришћење.

Натписи

Укратко објашњење шта ова датотека представља/приказује

Ставке приказане у овој датотеци

приказује

настанак

16. септембар 2013

контролна сума

f07eea03bf3402e2556250ff4d564b1387f708ff

начин одређивања: SHA-1 енглески

висина

501 пиксел

ширина

501 пиксел

Историја датотеке

Кликните на датум/време да бисте видели тадашњу верзију датотеке.

Датум/времеМинијатураДимензијеКорисникКоментар
тренутна11:15, 31. децембар 2019.Минијатура за верзију на дан 11:15, 31. децембар 2019.501 × 501 (86 kB)BevinKaconactual size from source
02:49, 17. септембар 2013.Минијатура за верзију на дан 02:49, 17. септембар 2013.1.280 × 1.280 (178 kB)JmencisomUser created page with UploadWizard

Следећа страница користи ову датотеку:

Глобална употреба датотеке

Други викији који користе ову датотеку:

Метаподаци

Ова датотека садржи додатне податке, који вероватно долазе од дигиталног фотоапарата или скенера коришћеног за дигитализацију.

Ако је првобитно стање датотеке промењено, могуће је да неки детаљи не описују измењену датотеку у потпуности.

Преузето из „https://sr.wikipedia.org/wiki/Датотека:A_giant,_smouldering_star.jpg”