Figure 1 from Kinematic Analysis of a Protostellar Multiple System: Measuring the Protostar Masses and Assessing Gravitational Instability in the Disks of L1448 IRS3B and L1448 IRS3A

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Kinematic Analysis of a Protostellar Multiple System: Measuring the Protostar Masses and Assessing Gravitational Instability in the Disks of L1448 IRS3B and L1448 IRS3A

Authors: Nickalas K. Reynolds, John J. Tobin, Patrick Sheehan, Sarah I. Sadavoy, Kaitlin M. Kratter, Zhi-Yun Li, Claire J. Chandler, Dominique Segura-Cox, Leslie W. Looney, and Michael M. Dunham

2021 The Astrophysical Journal Letters 907 L10.

Provider: AAS Journals

Caption: Figure 1.

ALMA 879 μm continuum observations of the triple protostellar system L1448 IRS3B and its wide companion IRS3A (left). The right panels are ∼2× zoom-ins on IRS3B and IRS3A. The top right image shows the wide companion, IRS3A (d ∼ 7.″9 ≈ 2300 au), featuring possible spiral structure. The bottom right image zooms in on the protomultiple system, IRS3B. The inner binary is separated by 0.″25 (75 au) and has a spiral circumbinary disk with the embedded source ∼0.″8 (230 au) away from the binary within one of the arms. The beam size of each panel is shown in lower right (0.″11 × 0.″05).

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