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Shaping the Envelope of the Asymptotic Giant Branch Star W43A with a Collimated Fast Jet

  • Authors: Daniel Tafoya, Hiroshi Imai, José F. Gómez, Jun-ichi Nakashima, Gabor Orosz, and Bosco H. K. Yung

2020 The Astrophysical Journal Letters 890 L14.

  • Provider: AAS Journals

Caption: Figure 4.

Velocity channel map of the CO(J = 2 → 1) emission from W43A. The contours indicate 5, 10, and 15 times the rms noise level of the maps, 8 × 10−4 Jy beam−1. The numbers in the upper left corner correspond to the velocity offset with respect to the systemic velocity (34 km s−1), Voffset, of the channel map. The vertical color wedge is in units of Jy beam−1. The white cross is located at the position of the central bright dot that pinpoints the location of the star: (J2000) R.A. = 18h47m41.ˢ164, decl. = −1°45′11.″54. The blue ellipse located at the lower left corner indicates the synthesized beam, θFWHM = 0.″048 × 0.″031, PA = 75°.

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