The spider diagram for the inclined spiral [SA(s)ab] galaxy M81 (NGC 3031) shows modest but systematic deviations near the spiral arms. Note: these images are NOT at the same scale -- the optical image is somewhat smaller than the HI image.
Spiral Arms in Spider Diagrams |
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The spider diagram for the inclined spiral [SA(s)ab] galaxy M81 (NGC 3031) shows modest but systematic deviations near the spiral arms. Note: these images are NOT at the same scale -- the optical image is somewhat smaller than the HI image. |