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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 1.

Continuum and CO(J = 2 → 1) line emission from W43A. The green contours are CO(J = 2 → 1) emission integrated over the range of line-of-sight velocity offset ﹩| {V}_{\mathrm{offset}}(\mathrm{km}\,{{\rm{s}}}^{-1})| \lt 75﹩. The gray contours are CO(J = 2 → 1) emission integrated over the highest velocity range, ﹩75\lt | {V}_{\mathrm{offset}}(\mathrm{km}\,{{\rm{s}}}^{-1})| \lt 100﹩. The contours are drawn from 3σ on steps of 3σ (σ = 15 mJy beam−1 km s−1). The ellipse at the bottom left corner represents the size of the synthesized beam of the CO observations, θbeam = 0.″048 × 0.″031, PA = 74.°8. The color map is the continuum emission at ∼230 GHz and the corresponding synthesized beam is θbeam = 0.″047 × 0.″030, PA = 78.°1.