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

A. Caratti o Garatti, R. Garcia Lopez, T. P. Ray, J. Eislöffel, B. Stecklum, A. Scholz, S. Kraus, G. Weigelt, A. Kreplin, V. Shenavrin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

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.
Original languageEnglish
Article numberL4
Number of pages5
JournalAstrophysical Journal Letters
Volume806
Issue number1
DOIs
Publication statusPublished - 2 Jun 2015

Keywords

  • Binaries: close
  • Circumstellar matter
  • Stars: formation
  • Stars: individual: 2MASS J06593158-0405277
  • Stars: pre-main sequence
  • Techniques: high angular resolution

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