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Proper Motion of Dense Circumstellar Knots in the Supernova Remnant Cassiopeia A

  • Authors: Bon-Chul Koo, Sang Bum Ko, Christopher F. McKee, Carl Heiles, Robert A. Fesen, Ji Yeon Seok, Hyun-Jeong Kim, Sung-Chul Yoon

Bon-Chul Koo et al 2025 The Astrophysical Journal Supplement Series 280 .

  • Provider: AAS Journals

Caption: Figure 9.

(Left) Proper-motion map of Knot 24 as shown in Figure 2. The background image is the 2014 HST F625W image, with contours indicating the brightness distribution. The inset displays the average [Fe II] 1.644 μm spectrum of Knot 24 adapted from B.-C. Koo et al. (2020). North is up, and east is to the left. (Right) A schematic figure describing the key features of Knot 24 and its surrounding environment.

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