Perseus-armen
Perseus-armen er en af to store spiralarme i Mælkevejsgalaksen. Den anden store arm kaldes Centaurus-armen. Perseus-armen begynder fra den distale ende af den lange bjælke.[1] Afstanden mellem solsystemet og Perseus-armen er tidligere antaget at være 13.000 lysår væk, men menes nu at være 6.400 lysår.[2]
Se også
- Orion-Cygnus-armen
- Sagittarius-armen
Referencer
- ^ Churchwell, Ed; Babler, Brian L.; Meade, Marlin A. (2009). "The Spitzer/GLIMPSE Surveys: A New View of the Milky Way" (PDF). Publications of the Astronomical Society of the Pacific. 121 (877): 213-230. Bibcode:2009PASP..121..213C. doi:10.1086/597811.
- ^ McKee, Maggie (8. december 2005). "Spiral arm of Milky Way looms closer than thought". New Scientist. Reed Business Information Ltd. Hentet 31. oktober 2013.
Medier brugt på denne side
Milky Way Spiral Arm.svg
Forfatter/Opretter:
→ Milky Way Spiral Arm (other versions)
Forfatter/Opretter:
- translator: Manlleus (ca)
→ Milky Way Spiral Arm (other versions)
Milky Way Arms ssc2008-10.svg
Artist's conception of the Milky Way galaxy as seen from far Galactic North (in Coma Berenices) by NASA/JPL-Caltech/R. Hurt [1] annotated with arms (colour-coded according to Milky Way article) as well as distances from the Solar System and galactic longitude with corresponding constellation.
Artist's conception of the Milky Way galaxy as seen from far Galactic North (in Coma Berenices) by NASA/JPL-Caltech/R. Hurt [1] annotated with arms (colour-coded according to Milky Way article) as well as distances from the Solar System and galactic longitude with corresponding constellation.