ファイル:Viewing the Vermin Galaxy.jpg

提供: testwiki
ナビゲーションに移動 検索に移動
元のファイル (1,244 × 1,242 ピクセル、ファイルサイズ: 892キロバイト、MIME タイプ: image/jpeg)

このファイルはウィキメディア・コモンズのものであり、他のプロジェクトで使用されている可能性があります。 ウィキメディア・コモンズでのファイル解説ページにある説明を以下に示します。

概要

解説
English: The NASA/ESA Hubble Space Telescope is famous for its jaw-dropping snapshots of the cosmos. At first glance this Picture of the Week appears to be quite the opposite, showing just a blur of jagged spikes, speckled noise, and weird, clashing colours — but once you know what you are looking at, images like this one are no less breathtaking.

This shows a distant galaxy — visible as the smudge to the lower right — as it begins to align with and pass behind a star sitting nearer to us within the Milky Way. This is an event known as a transit. The star is called HD 107146, and it sits at the centre of the frame. Its light has been blocked in this image to make its immediate surroundings and the faint galaxy visible — the position of the star is marked with a green circle.

The concentric orange circle surrounding HD 107146 is a circumstellar disc — a disc of debris orbiting the star. In the case of HD 107146 we see the disc face-on. As this star very much resembles our Sun, it is an interesting scientific target to study: its circumstellar disc could be analogous to the asteroids in our Solar System and the Kuiper belt.

A detailed study of this system is possible because of the much more distant galaxy — nicknamed the “Vermin Galaxy” by some to reflect their annoyance at its presence — as the star passes in front of it. The unusual pairing was first observed in 2004 by Hubble’s Advanced Camera for Surveys, and again in 2011 by Hubble’s Space Telescope Imaging Spectrograph. The latter image is shown here, as the Vermin Galaxy began its transit behind HD 107146. The galaxy will not be fully obscured until around 2020, but interesting science can be done even while the galaxy is only partly obscured. Light from the galaxy will pass through the star’s debris discs before reaching our telescopes, allowing us to study the properties of the light and how it changes, and thus infer the characteristics of the disc itself.
日付
原典 https://www.spacetelescope.org/images/potw1722a/
作者 ESA/Hubble & NASA

ライセンス


表示
表示
 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:ja:クリエイティブ・コモンズ
表示
このファイルはクリエイティブ・コモンズ 表示 4.0 国際ライセンスのもとに利用を許諾されています。
帰属:
ESA/Hubble
あなたは以下の条件に従う場合に限り、自由に
  • 共有 – 本作品を複製、頒布、展示、実演できます。
  • 再構成 – 二次的著作物を作成できます。
あなたの従うべき条件は以下の通りです。
  • 表示 – あなたは適切なクレジットを表示し、ライセンスへのリンクを提供し、変更があったらその旨を示さなければなりません。これらは合理的であればどのような方法で行っても構いませんが、許諾者があなたやあなたの利用行為を支持していると示唆するような方法は除きます。

キャプション

このファイルの内容を1行で記述してください

このファイルに描写されている項目

題材

成立日

29 5 2017

データサイズ

913,417 バイト

全高

1,242 ピクセル

全幅

1,244 ピクセル

チェックサム

c02f9960d2a6bee71a6974d4c02eb6bea03e640c

使用された手段・手法: SHA-1

ファイルの履歴

過去の版のファイルを表示するには、その版の日時をクリックしてください。

日時サムネイル寸法利用者コメント
現在の版2017年5月29日 (月) 22:042017年5月29日 (月) 22:04時点における版のサムネイル1,244 × 1,242 (892キロバイト)wikimediacommons>HuntsterUse default resolution rather than the stretched screen resolution version.

以下のページがこのファイルを使用しています:

「https://ja.wiki.beta.math.wmflabs.org/wiki/ファイル:Viewing_the_Vermin_Galaxy.jpg」から取得