Investigating 2MASS J06593158-0405277: a FUor burst in a triple system?

Abstract

FUor outbursts in young stellar objects (YSOs) are the most dramatic events among episodic accretion phenomena. The origin of these bursts is not clear: disk instabilities and/or disk perturbations by an external body being the most viable hypotheses. Here, we report our VLT/SINFONI high angular resolution AO-assisted observations of 2MASS J06593158-0405277, which is undergoing a recently discovered FUor outburst. Our observations reveal the presence of an extended disc-like structure around the FUor, a very low-mass companion (2MASS J06593158-0405277B) at ~100 au in projection, and, possibly, a third closer companion at ~11 au. These sources appear to be young, displaying accretion signatures. Assuming the components are physically linked, 2MASS J06593158-0405277 would then be one of the very few triple systems observed in FUors.

Accepted for publication in the Astrophysical Journal Letters

References in corpus (5)

• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Accretion in the Rho-Oph pre-main sequence stars
• Spatially Resolved Molecular Hydrogen Emission in the Inner 200AU Environments of Classical T Tauri Stars
• Substellar Objects in Nearby Young Clusters (SONYC): The bottom of the Initial Mass Function in NGC1333
• The progenitor of the FUor-type young eruptive star 2MASS J06593158-0405277

Cited by in corpus (5)

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• High-resolution spectroscopic monitoring observations of FU Orionis-type object, V960 Mon
• Spirals and clumps in V960 Mon: signs of planet formation via gravitational instability around an FU Ori star?
• Modeling the Multiwavelength Evolution of the V960 Mon System