Image:Milky Way Arms.svg

From Wikipedia, the free encyclopedia

Milky_Way_Arms.svg‎ (SVG file, nominally 614 × 580 pixels, file size: 186 KB)

Wikimedia Commons logo This is a file from the Wikimedia Commons. The description on its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Contents

Description

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. HII regions are marked as dots colored in the same colour as their spiral arm. They come in three sizes, measured by the excitation parameter U:

  1. small - U > 200 pc cm-2
  2. medium - 200 > U > 110 pc cm-2
  3. large - 110 > U > 70 pc cm-2

Summary

Description

A redevelopment of Image:Milky Way Arms-Hypothetical.png: details about method below.
Source

User:YUL89YYZ, User:Ctachme, Kevin Krisciunas, Bill Yenne: "The Pictorial Atlas of the Universe", page 145 ( ISBN 1-85422-025-X) and µOR.
Date

08:58, 9 June 2007 (UTC)
Author

User:Rursus
Permission
( Reusing this image)

see below
Other versions

Original concept

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!
b. names for MW arms as per YUL89YYZ/Ctachme Checked with
c. HII-regions registered by radio and optical, as per Krisciunas/Yenne, secondary sources
d. centre of galaxy and galaxy bar, Checked with
e. intensity maxima of arms, as per Krisciunas/Yenne secondary sources

References

  1. ↑ a b Momany, Zaggia, Gilmore, Piotto, Carraro, Bedin, Angeli, A&A press release, Released on March 16th, 2006, Last retrieved: 9 jun 2007
  2. ↑ Solstation.com: Outer Disk Ring?, review of a letter to New Scientist from Naomi McClure-Griffiths et al. (Both latest retrieved 9 Jun 2007)
  3. ↑ newscientist.com - Jenny Hogan: Milky Way spiral gets an extra arm, last retrieved 9 jun 2007

Licensing

I, the copyright holder of this work, hereby publish it under the following license:
GNU head 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".

Aragonés | العربية | Asturianu | Беларуская (тарашкевіца) | Български | বাংলা | ইমার ঠার/বিষ্ণুপ্রিয়া মণিপুরী | Brezhoneg | Bosanski | Català | Cebuano | Česky | Dansk | Deutsch | Ελληνικά | English | Esperanto | Español | Eesti | Euskara | فارسی | Suomi | Français | Gaeilge | Galego | עברית | Hrvatski | Magyar | Bahasa Indonesia | Ido | Íslenska | Italiano | 日本語 | ქართული | ភាសាខ្មែរ | 한국어 | Kurdî / كوردی | Latina | Lëtzebuergesch | Lietuvių | Bahasa Melayu | Nnapulitano | Nederlands | ‪Norsk (nynorsk)‬ | ‪Norsk (bokmål)‬ | Occitan | Polski | Português | Română | Русский | Slovenčina | Slovenščina | Shqip | Српски / Srpski | Svenska | తెలుగు | ไทย | Tagalog | Türkçe | Українська | اردو | Tiếng Việt | Volapük | Yorùbá | ‪中文(简体)‬ | ‪中文(繁體)‬ | +/-

File history

Click on a date/time to view the file as it appeared at that time.

Date/Time Dimensions User Comment
current 19:21, 9 June 2007 614×580 (186 KB) Rursus
19:07, 9 June 2007 614×580 (186 KB) Rursus
12:58, 9 June 2007 592×580 (183 KB) Rursus
12:25, 9 June 2007 592×580 (170 KB) Rursus
10:32, 9 June 2007 592×580 (201 KB) Rursus
08:58, 9 June 2007 592×580 (237 KB) Rursus ({{Information |Description=A redevelopment of Image:Milky Way Arms-Hypothetical.png |Source= User:YUL89YYZ, User:Ctachme, Kevin Krisciunas, Bill Yenne: "The Pictorial Atlas of the Universe", page 145 (ISBN 1-85422-025-X) and µOR. |Date=~~~~~ )
The following pages on Schools Wikipedia link to this image (list may be incomplete):
Retrieved from "http://en.wikipedia.org/wiki/Image:Milky_Way_Arms.svg"
This Wikipedia DVD Selection is sponsored by SOS Children , and is a hand-chosen selection of article versions from the English Wikipedia edited only by deletion (see www.wikipedia.org for details of authors and sources). See also our Disclaimer.