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An Imaging Survey of Early‐Type Barred Galaxies

  • Authors: Peter Erwin and Linda S. Sparke

Erwin & Sparke 2003 The Astrophysical Journal Supplement Series 146 299.

  • Provider: AAS Journals

Caption: Fig. 5.

Examples of differences between position angles of secondary bars as given by ellipse fits (diagonal lines) vs. actual isophotes (left) and unsharp masks (﹩\sigma =5﹩, right).

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