[Fe II] emissions associated with the young interacting binary UY Aurige

Abstract

We present high resolution 1.06 -- 1.28 micron spectra toward the interacting binary UY Aur obtained with GEMINI/NIFS and the AO system Altair. We have detected [FeII] $\lambda$~1.257 micron and [He I] $\lambda$~1.083 micron lines from both UY Aur A (the primary source) and UY Aur B (the secondary). In [Fe II] UY Aur A drives fast and widely opening outflows with an opening angle of ~ 90 degree along a position angle of ~40 degree, while UY Aur B is associated with a redshifted knot. The blueshifted and redshifted emissions show complicated structure between the primary and secondary. The radial velocities of the [Fe II] emission features are similar for UY Aur A and B: ~ -100 km/s for the blueshifted emission and ~ +130 km/s for the red-shifted component. The [He I] line profile observed toward UY Aur A comprises a central emission feature with deep absorptions at both blueshifted and redshifted velocities. These absorption features may be explained by stellar wind models. The [He I] line profile of UY Aur B shows only an emission feature.

20 pages, 5 figures, Accepted to ApJ

References in corpus (14)

• Probing T Tauri Accretion and Outflow with 1 Micron Spectroscopy
• Accretion-Powered Stellar Winds II: Numerical Solutions for Stellar Wind Torques
• Spatially Resolved Molecular Hydrogen Emission in the Inner 200AU Environments of Classical T Tauri Stars
• Modeling T Tauri Winds from He I 10830 Profiles
• The Evolution of the Multiplicity of Embedded Protostars I: Sample Properties and Binary Detections
• The Evolution of the Multiplicity of Embedded Protostars II: Binary Separation Distribution & Analysis
• Accretion-Powered Stellar Winds III: Spin Equilibrium Solutions
• Direct Imaging of Bridged Twin Protoplanetary Disks in a Young Multiple Star
• Redshifted Absorption at He I 10830 as a Probe of the Accretion Geometry of T Tauri Stars
• Adaptive Optics Spectroscopy of the [Fe II] Outflows from HL Tauri and RW Aurigae
• IR diagnostics of embedded jets: velocity resolved observations of the HH34 and HH1 jets
• A Micro Molecular Bipolar Outflow From HL Tau
• Near-Infrared Coronagraphic Observations of the T Tauri Binary System UY Aur
• ISM Dust Grains and N-band Spectral Variability in the Spatially Resolved Subarcsecond Binary UY Aur

Cited by in corpus (2)

• Circumbinary Ring, Circumstellar disks and accretion in the binary system UY Aurigae
• Variable Accretion Processes in the Young Binary-Star System UY Aur