File:Milky Way Arms.svg
![File:Milky Way Arms.svg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Milky_Way_Arms.svg/614px-Milky_Way_Arms.svg.png)
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Contents
Summary
DescriptionMilky Way Arms.svg |
A "God's view" map of Milky Way as seen from far Galactic North (in Coma Berenices). The star-like lines center in a yellow dot representing the position of Sun. The spokes of that "star" are marked with constellation abbreviations, "Cas" for "Cassiopeia", etc. The spiral arms are colored differently in order to highlight what structure belongs to which arm. H II regions are marked as dots colored in the same color as their spiral arm. They come in three sizes, measured by the excitation parameter U:
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Date | (UTC) |
Source |
A redevelopment of Image:Milky Way Arms-Hypothetical.png: details about method below. |
Author | User:Rursus |
Other versions |
Derivative works of this file: Milky Way Arms.png
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<text> element. Unless rendering the text of the SVG file produces an image with text that is incurably unreadable due to technical limitations, it is highly recommended to change the paths back to text. Doing so will ease the process of localizing this image to other languages and is likely to reduce the file size in a significant scale. Other SVGs containing path-based text can be found at Category:Path text SVG. For more information, see SVG: Fonts and Preparing images for upload: Text.беларуская (тарашкевіца) ∙ Deutsch ∙ English ∙ español ∙ magyar ∙ italiano ∙ 日本語 ∙ македонски ∙ русский ∙ slovenščina ∙ svenska ∙ ไทย ∙ Tiếng Việt ∙ 中文 ∙ 中文(中国大陆) ∙ 中文(简体) ∙ 中文(繁體) ∙ 中文(香港) ∙ 中文(新加坡) ∙ 中文(臺灣) ∙ +/− | ![]() |
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This SVG file contains embedded text that can be translated into your language, using any capable SVG editor, text editor or the SVG Translate tool. For more information see: About translating SVG files. |
Method
The original image, Image:Milky Way Arms-Hypothetical.png, was dloaded and rotated by gimp, so that Sun is up, as is custom on Milky Way "God's view" maps. The image is then saved and imported into inkscape, and used as a template for vector editing by hand. Thereafter added:
a. | 30° sectors around Sun, named for constellation in that direction in the galactic plane, | dbl check! |
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b. | names for MW arms as per YUL89YYZ/Ctachme | Checked with [1][2][3] |
c. | HII-regions registered by radio and optical, as per Krisciunas/Yenne, | secondary sources |
d. | center of galaxy and galaxy bar, | Checked with [1] |
e. | intensity maxima of arms, as per Krisciunas/Yenne | secondary sources |
References
- ↑ a b Momany, Zaggia, Gilmore, Piotto, Carraro, Bedin, Angeli, A&A press release, Released on March 16th, 2006, Last retrieved: 9 jun 2007
- ↑ Solstation.com: Outer Disk Ring?, review of a letter to New Scientist from Naomi McClure-Griffiths et al. (Both latest retrieved 9 Jun 2007)
- ↑ newscientist.com - Jenny Hogan: Milky Way spiral gets an extra arm, last retrieved 9 jun 2007
Licensing
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
Captions
Items portrayed in this file
depicts
190,600 byte
580 pixel
614 pixel
image/svg+xml
d53d462659405ad73392fd0d5780cda9bbb20ddb
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:21, 9 June 2007 | ![]() | 614 × 580 (186 KB) | wikimediacommons>Rursus |
File usage
Global file usage
The following other wikis use this file:
- Usage on bn.wikipedia.beta.wmflabs.org
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Width | 614.03998 |
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Height | 579.66998 |