An orbital release model for the Orion BN/KL fingers

Abstract

We present a simple model in which the bullets that produce the "Orion fingers" (ejected by the BN/KL object) are interpreted as protoplanets or low mass protostars in orbit around a high mass star that has a supernova explosion. As the remnant of the SN explosion has only a small fraction of the mass of the pre-supernova star, the orbiting objects then move away in free trajectories, preserving their orbital velocity at the time of release. We show that a system of objects arranged in approximately co-planar orbits results in trajectories with morphological and kinematical characteristics resembling the Orion fingers. We show that, under the assumption of constant velocity motions, the positions of the observed heads of the fingers can be used to reconstruct the properties of the orbital structure from which they originated, resulting in a compact disk with an outer radius of $\sim 2.4$~AU.

arXiv comment5 pages, 3 figures

References in corpus (16)

• Formation of the Widest Binaries from Dynamical Unfolding of Triple Systems
• Explosive Outflows Powered by the Decay of Non-Hierarchical Multiple Systems of Massive Stars: Orion BN/KL
• Proper Motions of the BN Object and the I Radio Source in Orion: Where and When Did BN Become a Runaway Star?
• Monitoring the Large Proper Motions of Radio Sources in the Orion BN/KL Region
• Explosive Disintegration of a Massive Young Stellar System in Orion
• Dynamical decay of a massive multiple system in Orion KL?
• The ALMA View of the OMC1 Explosion in Orion
• Orphaned Protostars
• The Orion Fingers: Near-IR Adaptive Optics Imaging of an Explosive Protostellar Outflow
• A 10,000 Years Old Explosion in DR21
• Brown Dwarf Binaries from Disintegrating Triple Systems
• Final compact remnants in core-collapse supernovae from 20 to 40 $M_{\odot }$: the lower mass gap
• A 3D view of the outflow in the Orion Molecular Cloud 1 (OMC-1)
• Molecular outflows: Explosive versus protostellar
• Confirming the Explosive Outflow in G5.89 with ALMA
• Formation of Orion Fingers

Cited by in corpus (2)

• Confirming the Explosive Dispersal Outflow in DR21 with ALMA
• Modelling the CO streamers in the explosive ejection of Orion BN/KL region