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 2MASSJ06593158-0405277, which is undergoing a recently discovered FUoroutburst. Our observations reveal the presence of an extended disc-like structure around the FUor, a very low-mass companion (2MASSJ06593158-0405277B) 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.
Citation
Caratti o Garatti , A , Garcia Lopez , R , Ray , T P , Eislöffel , J , Stecklum , B , Scholz , A , Kraus , S , Weigelt , G , Kreplin , A & Shenavrin , V 2015 , ' Investigating 2MASS J06593158-0405277 : a FUor burst in a triple system? ' , Astrophysical Journal Letters , vol. 806 , no. 1 , L4 . https://doi.org/10.1088/2041-8205/806/1/L4
Publication
Astrophysical Journal Letters
Status
Peer reviewed
ISSN
2041-8205Type
Journal article
Description
A.C.G., R.G.L., and T.P.R. were supported by Science Foundation Ireland, grant 13/ERC/I2907. S.K. acknowledges support from an STFC Ernest Rutherford Fellowship (ST/J004030/1), Ernest Rutherford Grant (ST/K003445/1), and Marie Curie CIG grant (SH-06192).Collections
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