Upload
nelson-correia
View
95
Download
5
Embed Size (px)
Citation preview
Quasar 3C 273
What is a Quasar
• Quasi-stellar-object short: Quasar
• is the core of an active galaxy
• in visible light: looks like a star (brightest objects)
• 10^12 times brighter than the sun
• it emits two jets of ionised GAAAAAAAS
• very bright
• characteristic spectra
• very bride emission lines
3C 273
• discovered 1963
• by Marten Schmidt
• no star
• 2.100.000.000 lightyears
• redshift: 0,157
• mag: 12,85
3C 273
Pictures of 3C 273 taken with the Hubble Space Telescope
Quasar 3C 273
•759,6 - 656,26 = 103,34 (Difference) •103,34 : 656,26 = 0,157468077 (divided through the normal wavelength) •0,157468077 x 299792,458 = 47207,74176 km/s (multiplied with the speed of light) •47207,74176 km/s : 72 = 655,66308 Mpsc (divided through the Hubble constant) •655,66308 Mpsc x 3,26 Mil Lj = 2137461641 = 2,137461641 bil Lj (multiplied with Lj`s)
• 759,6 2137461641 = 2,137461641 bil Lj
759,6 2137461641 = 2,137461641 bil Lj
• 563,1 – 486,13 = 76,97 2149190292 Lj = 2,149190292 bil Lj
• 563,1 2149190292 Lj = 2,149190292 bil Lj
563,1 2149190292 Lj = 2,149190292 bil Lj
Our calculation: H-alpha 2,137 billion Lj
H-beta 2,149 billion Lj
Differenz between Results: 0,2 %
Calculation from astronoms: 2,436 bil Lj und 2,351 bil Lj
• 563 / 1,157 = 486,6 nm H-β
443,3 / 1,175 = 383,1 nm H-η
Transition of 3→2 4→2 5→2 6→2 7→2 8→2 9→2 →2
Name H-α H-β H-γ H-δ H-ε H-ζ H-η
Wavelength (nm)
656,2 486,1 434 410,1 397,0 388,8 383.5 364,6
• 474,4 / 1,157 = 410,02 nm = H-δ
503,4 / 1,157 = 434 nm = H-γ
• 448 / 1,157 = 387,2 nm = H-ζ
458,9 / 1,157 = 396,6 nm = H-ε
Quasar and star
• Our Website: www.herzjesugym.com
• Projekte – Comeniusprojekt “Dive in the sky”
or
• Fachbereiche – Astronomie – hier