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JWST Observations of Starbursts: A Young Bubble in NGC 253’s Central Starburst

  • Authors: Kaitlyn E. Sheriff, Elisabeth A. C. Mills, Xinyu Mai, Utsav Siwakoti, Sara E. Duval, Alberto D. Bolatto, Rebecca C. Levy, Jia Wei Teh, Torsten Böker, Serena A. Cronin, Daniel A. Dale, Keaton Donaghue, Kimberly Emig, Simon C. O. Glover, Rodrigo Herrera-Camus, Ralf S. Klessen, Thomas S.-Y. Lai, Ashley E. Lieber, Laura Lenkić, Sebastian Lopez, David S. Meier, Jüergen Ott, J. D. T. Smith, Yu-Hsuan Teng, Paul P. van der Werf, Sylvain Veilleux, Vicente Villanueva, Rachel Cionitti, Joseph Havens, Maleah Rhem, Nathan Shaw, Kai Smith, Hazel Belfiore Wright, Md Abdullah Al Zaman

Kaitlyn E. Sheriff et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 8.

Observed CO(3–2) PV diagram extracted along the north–south direction through the bubble center, with the best-fit [Ar II] ellipse (dashed) overlaid for reference. The cyan arrow marks faint emission at lower velocities (∼100 km s−1) offset to the south, which we associate with the swept-up shell. A bright, spectrally broad component dominates at velocities ≳200 km s−1, likely unrelated foreground molecular emission. For this reason, we saturate (in white) the brightest emission in the PV diagram.

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