Fichier:A spiral galaxy’s brights and darks.jpg

Le contenu de la page n’est pas pris en charge dans d’autres langues.
Une page de Wikipédia, l'encyclopédie libre.

Fichier d’origine(1 280 × 1 203 pixels, taille du fichier : 446 kio, type MIME : image/jpeg)

Ce fichier et sa description proviennent de Wikimedia Commons.

Description

Description
English: Ribbons of dust festoon the galaxy NGC 613 in this new image from the NASA/ESA Hubble Space Telescope. NGC 613 is classified as a barred spiral galaxy for the bar-shaped band of stars and dust crossing its intensely glowing centre.

About two thirds of spiral galaxies show a characteristic bar shape like NGC 613 — our own galaxy appears to have one of these bars through its midline as well.

NGC 613 lies 65 million light-years away in the constellation of Sculptor (The Sculptor). It was first noted by the English astronomer William Herschel in 1798 and later by John Louis Emil Dreyer, a Danish–Irish astronomer, who recorded the object in his 1888 New General Catalogue of Nebulae and Clusters of Stars — hence the letters "NGC".

NGC 613's core looks bright and uniformly white in this image as a result of the combined light shining from the high concentration of stars packed into the core, but lurking at the centre of this brilliance lies a dark secret. As with nearly all spiral galaxies, a monstrous black hole resides at the heart of NGC 613. Its mass is estimated at about ten times that of the Milky Way's supermassive black hole and it is consuming stars, gas and dust. As this matter descends into the black hole's maw it radiates away energy and spews out radio waves. However, when looking at the the galaxy in the optical and infrared wavelengths used to take this image, there is no trace of the dark heart.

A version of this image was entered into the Hubble's Hidden Treasures image processing competition by contestant Robert Gendler.
Date
Source http://www.spacetelescope.org/images/potw1539a/
Auteur

ESA/Hubble & NASA and S. Smartt (Queen's University Belfast)

Acknowledgement: Robert Gendler

Conditions d’utilisation

w:fr:Creative Commons
paternité
paternité
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:fr:Creative Commons
paternité
Ce fichier est disponible selon les termes de la licence Creative Commons Attribution 4.0 International.
Attribution: ESA/Hubble
Vous êtes libre :
  • de partager – de copier, distribuer et transmettre cette œuvre
  • d’adapter – de modifier cette œuvre
Sous les conditions suivantes :
  • paternité – Vous devez donner les informations appropriées concernant l'auteur, fournir un lien vers la licence et indiquer si des modifications ont été faites. Vous pouvez faire cela par tout moyen raisonnable, mais en aucune façon suggérant que l’auteur vous soutient ou approuve l’utilisation que vous en faites.

Légendes

Ajoutez en une ligne la description de ce que représente ce fichier

Éléments décrits dans ce fichier

dépeint

image/jpeg

151ce79f350f9a855a0b2623c5d8af7f6fe8aba2

456 930 octet

1 203 pixel

1 280 pixel

Historique du fichier

Cliquer sur une date et heure pour voir le fichier tel qu'il était à ce moment-là.

Date et heureVignetteDimensionsUtilisateurCommentaire
actuel1 octobre 2015 à 12:17Vignette pour la version du 1 octobre 2015 à 12:171 280 × 1 203 (446 kio)JmencisomUser created page with UploadWizard

La page suivante utilise ce fichier :

Usage global du fichier

Les autres wikis suivants utilisent ce fichier :

Métadonnées