Misaligned molecular outflows and precessing jet towards the massive young stellar object G034.5964-01.0292

M. E. ORTEGA; S. PARON; C. FARIÑA

Morelia, Michoacán

Congreso; Multi-Scale Star Formation; 2017

Instituto de Radioastronomía y Astrofísica. Universidad Nacional Autónoma de México

The red MSX source G034.5964-01.0292 (MSXG34), catalogued as a massive young stellar object (YSO), was observed in several atomic and molecular transitions with the aim of study the relation between molecular outflows and jets. Based on observations of the 12CO J=3-2 line, with an angular resolution of 22 arcsec, carried out with theAtacama Submillimeter Telescope Experiment (ASTE), we discovered misaligned red and blue-shifted molecular outflows associated with the source. Using near-infrared data acquired with Gemini-NIRI at the JHKs-broad-bands and narrow-bands centered at the emission lines of [FeII], H2 1-0 S(1), H2 2-1 S(1), Br gamma, and CO 2-0 (bh), we studied the circumstellar environment of the central source with an angular resolution of 0.4 arcsec. The H2 1-0 S(1) continuum subtracted image, reveals several knots and filaments at large spatial scale around the point source, in perfect matching with the distribution of the red and blue-shifted molecular outflows.By the other hand, the emission in the JHKs-broad-bands shows, with great detail, the presence of a cone-like shape nebula extending to the north/northeast of the point source, which appears to be attached to it by a jet-like structure.In the three bands the nebula is resolved in a twisted-shaped feature composed by two arc-like features and a bow shock-like structure seen mainly in the Ks-band, which strongly suggests the presence of a precessing jet. It is really puzzling the orientation of the molecular outflows (pointing the redshifted one towards the northwest andthe blueshifted one towards the southwest), compared with the cone-like shaped nebula (pointing towards the northeast). The presence of a not resolved system of YSOs could explain both, the precessing jet through tidal interactions between companion stars and the misaligned molecular outflows.