Is there a minimum size for a galaxy to have spiral arms?

Asked Apr 18 '20 at 02:41

Active Apr 18 '20 at 04:28

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Is there a minimum size or mass for a galaxy to present spiral arms? I don't remember many small galaxies with spiral arms.

Does the mechanism responsible for producing spiral arms no longer hold if the galaxy is too small?

edited Apr 18 '20 at 04:28

James K

asked Apr 18 '20 at 02:41

Elismar Lösch

1

related https://astronomy.stackexchange.com/questions/35462/how-small-can-a-spiral-galaxy-be?r=SearchResults&s=1|35.8401 and https://astronomy.stackexchange.com/questions/18611/why-do-galaxies-have-arms?rq=1 – James K Apr 18 '20 at 04:31

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