Page 15 - Ultimate Visual Dictionary (DK)

GALAXIES

OPTICAL IMAGE OF CENTAURUS A FALSE-COLOR RADIO
(RADIO GALAXY) IMAGE OF CENTAURUS A
Dust lane crossing
elliptical galaxy Red indicates
high-intensity
radio waves
Galactic nucleus Radio
containing lobe Blue indicates
powerful source low-intensity
of radiation radio waves
Radiation from
galactic nucleus

Light from Outline of
old stars optical image
Radio of Centaurus A
lobe
Yellow indicates
medium-intensity
radio waves

FALSE-COLOR RADIO IMAGE OF 3C 273 (QUASAR)
Radiation from jet Quasar nucleus
of high-energy
particles moving
away from quasar
White indicates high-
intensity radio waves
Blue indicates
low-intensity
radio waves

OPTICAL IMAGE OF NGC 1566 FALSE-COLOR OPTICAL IMAGE OF NGC 5754
(SEYFERT GALAXY) (TWO COLLIDING GALAXIES)
Blue indicates low-
intensity radiation
Red indicates
Nebula in medium-intensity
spiral arm radiation
Spiral arm
distorted by
gravitational
influence of
smaller galaxy
Compact nucleus
emitting intense Large spiral
radiation galaxy

Smaller galaxy
colliding with
Spiral arm large galaxy
Yellow indicates
high-intensity
radiation

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