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Long Baseline Observations of the HD 100546 Protoplanetary Disk with ALMA

  • Authors: Sebastián Pérez, Simon Casassus, Antonio Hales, Sebastián Marino, Anthony Cheetham, Alice Zurlo, Lucas Cieza, Ruobing Dong, Felipe Alarcón, Pablo Benítez-Llambay, Ed Fomalont, and Henning Avenhaus

2020 The Astrophysical Journal Letters 889 L24.

  • Provider: AAS Journals

Caption: Figure 3.

12CO emission channel maps of HD 100546 showing several non-Keplerian structures. Most strikingly, it shows velocity “wiggles” (or kinks) between 0.″2 and 0.″3 separation northeast from the star. This local non-Keplerian feature can be seen in channels between +3 and +8 km s−1 in velocity. The Doppler flip in the deviation from axially symmetric kinematics (presented in Casassus & Pérez 2019) is shown as blue and red filled contours. The wiggle and Doppler flip labeled in the panel at +6 km s−1. Each panel shows 12CO emission sampled every 1 km s−1 (although the channel width is 0.5 km s−1). Contours correspond to 5, 10, and 15 times the channel rms (1.3 mJy beam−1). The synthesized beam of the CLEAN reconstruction is shown in the bottom left corner.

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