Tugna:Milky Way Arms.svg

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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:

  1. small - U > 200 pc cm-2
  2. medium - 200 > U > 110 pc cm-2
  3. large - 110 > U > 70 pc cm-2
Azemz (UTC)
Aɣbalu

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

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

Derivative works of this file:  Milky Way Arms.png

Translate this file 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!
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

  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

Turagt

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Azemz/SsaɛaAqmamaḍIseggiwenAmseqdacAwennit
Lux a9 Yunyu 2007 à 19:21Tugna tamectuḥt i lqem n 9 Yunyu 2007 à 19:21614 × 580 (186 KB/KO)Rursus
9 Yunyu 2007 à 19:07Tugna tamectuḥt i lqem n 9 Yunyu 2007 à 19:07614 × 580 (186 KB/KO)Rursus
9 Yunyu 2007 à 12:58Tugna tamectuḥt i lqem n 9 Yunyu 2007 à 12:58592 × 580 (183 KB/KO)Rursus
9 Yunyu 2007 à 12:25Tugna tamectuḥt i lqem n 9 Yunyu 2007 à 12:25592 × 580 (170 KB/KO)Rursus
9 Yunyu 2007 à 10:32Tugna tamectuḥt i lqem n 9 Yunyu 2007 à 10:32592 × 580 (201 KB/KO)Rursus
9 Yunyu 2007 à 08:58Tugna tamectuḥt i lqem n 9 Yunyu 2007 à 08:58592 × 580 (237 KB/KO)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=~~~~~

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