Research Gallery > The SAO/ASIAA Submillimeter Array (SMA)
Research Gallery
The SAO/ASIAA Submillimeter Array (SMA)
Sub-arcsecond images of the protostellar jet from L1448C(N) |
Image Credit: N. Hirano
The SiO J=8-7 and CO J=3-2 images of the jet driven by the class 0 protostar, L1448C(N), observed with the SMA at a resolution of ~0.5". The blue and red are the approaching and receding parts of the jet, the green is the 350 GHz continuum emission, which indicates the position of the protostar.
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The molecular jet driven by the class 0 protostar, L1448C(N), was observed in the SiO J=8-7 and CO J=3-2 lines and 350 GHz continuum at ~0.5'' resolution with the SMA.
The subarcsecond images of SiO and CO resolve the jet in its transverse direction.
The jet consists of a chain of knots with V-shaped bowlike features, suggesting that the knots are the internal working surfaces in the jet beam.
The widths of the jet increases with increasing distance from the central star; the beam-deconvolved jet width is 70 AU at the position of the innermost knot, while it increases to 320 AU at ~10'' away from the source.
The opening angle of the jet is ~10°.
This broadening of the jet is probably due to the sideways ejection of material from internal working surfaces. |