Bipolar jets produced by a spectroscopic binary

Abstract

We present evidence that the spectroscopically identified bipolar jets of the pre-main sequence binary KH 15D are a common product of the whole binary system, rather than being launched from either star individually. They may be launched from the innermost part of the circumbinary disk (CBD) or may result from the merging of two outflows driven by the individual stars. This evidence is based on high-resolution H-alpha and [OI] 6300A line profiles obtained during eclipse phases of this nearly edge-on system. The occultation of star A (the only currently visible star) by the disk strongly suppresses the stellar H-alpha and continuum emission and allows one to study the faint redshifted and blueshifted emission components of the bipolar jets. The strongest evidence for jet production by the whole binary system comes from the observed radial velocity symmetry of the two jet components relative to the systemic velocity of the binary, in combination with current accretion models from the CBD onto a binary system.

ApJ Letters, in press [6 pages]

References in corpus (3)

• Accretion-Powered Stellar Winds III: Spin Equilibrium Solutions
• The Orbit and Occultations of KH 15D
• Reflected Light from Sand Grains in the Terrestrial Zone of a Protoplanetary Disk

Cited by in corpus (21)

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• Alignment of a circumbinary disc around an eccentric binary with application to KH 15D
• The Light Curve of the Weakly-Accreting T Tauri Binary KH 15D from 2005-10: Insights into the Nature of its Protoplanetary Disk
• Wobbling and precessing jets from warped disks in binary systems
• Long-term simulation of MHD jet launching from an orbiting star-disk system
• Constraining the Circumbinary Disk Tilt in the KH 15D system
• Complex Variability of the H$\alpha$ Emission Line Profile of the T Tauri Binary System KH 15D: The Influence of Orbital Phase, Occultation by the Circumbinary Disk, and Accretion Phenomenae
• Optical and Radio Observations of the T Tauri Binary KH 15D (V582 Mon): Stellar Properties, Disk Mass Limit and Discovery of a CO Outflow
• The Spectrum of Electromagnetic Jets from Kerr Black Holes and Naked Singularities in the Teukolsky Perturbation Theory
• Curved jet motion. I. Orbiting and precessing jets
• An unusual very low-mass high-amplitude pre-main sequence periodic variable
• Seeing Through the Ring: Near-Infrared Photometry of V582 Mon (KH 15D)
• [Fe II] emissions associated with the young interacting binary UY Aurige
• MHD Modeling of a Disk-Wind from a High-Mass Protobinary: the case of Orion Source I
• Gas Absorption in the KH 15D System: Further Evidence for Dust Settling in the Circumbinary Disk
• Double-peaked OI profile: a likely signature of the gaseous ring around KH 15D
• On the Nature of the T Tauri Triple System
• Spatially resolved velocity structure in jets of DF Tau and UY Aur A
• Spectroscopy of the massive interacting binary UU Cassiopeiae