Astronomy   View all facts   Glossary   Help
abstraction > hypothesis > theory > astronomy theory > galaxy theory > density wave theory
Next galaxy theory: explosive galaxy formation    Up: galaxy theory    Previous galaxy theory: bottom-up scenario   

density wave theory
subjectfact 
density wave theoryhas implication the density waves rotate more slowly than the galaxy's stars and gashas source: Croswell, K. 1995 The Alchemy of the Heavens, Anchor Books, 2001-09-27 09:34:02.0
has author Lindblad (1925)has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:34:03.0
has definition Spiral structure is modelled as a small-amplitude wave propagating with fixed angular velocity, as the compression wave goes through, it triggers star formation on the leading edge of the spiral arms.has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:34:02.0
is a kind of galaxy theory2001-09-27 09:34:02.0
galaxy theoryhas domain extragalactic astronomy2001-09-27 09:34:02.0
theoryhas validity correct or incorrect with caveats2001-09-27 09:33:53.0
has date or a range of dates for which the theory was active2001-09-27 09:33:53.0