grand design spiral galaxy
(spiral galaxy with two just two arms that are well-defined)
A grand design spiral galaxy is a spiral galaxy
with a particular spiral structure:
with two spiral arms that are well-defined, forming a very
symmetric spiral.
Examples:
(galaxy type,spiral)
Further reading:
http://en.wikipedia.org/wiki/Grand_design_spiral_galaxy
Referenced by pages:
EMPIRE Survey
LINER
Messier 100 (M100)
Pinwheel Galaxy (M101)
Whirlpool Galaxy (M51a)
Messier 74 (M74)
spiral arm
Index