Tomography of the unique on-going jet in the planetary nebula NGC 2392

Abstract

Jets (fast collimated outflows) are claimed to be the main shaping agent of the most asymmetric planetary nebula (PNe) as they impinge on the circumstellar material at late stages of the asymptotic giant branch (AGB) phase. The first jet detected in a PN was that of NGC 2392, yet there is no available image because its low surface brightness contrast with the bright nebular emission. Here we take advantage from the tomographic capabilities of GTC MEGARA high-dispersion integral field spectroscopic observations of the jet in NGC 2392 to gain unprecedented details of its morphology and kinematics. The jet of NGC 2392 is found to emanate from the central star, break through the walls of the inner shell of this iconic PN and extend outside the nebula's outermost regions with an S-shaped morphology suggestive of precession. At odds with the fossil jets found in mature PNe, the jet in NGC 2392 is currently being collimated and launched. The high nebular excitation of NGC 2392, which implies a He${}^{++}$/He ionization fraction too high to be attributed to the known effective temperature of the star, has been proposed in the past to hint at the presence of a hot white dwarf companion. In conjunction with the hard X-ray emission from the central star, the present-day jet collimation would support the presence of such a double-degenerate system where one component undergoes accretion from a remnant circumbinary disk of the common envelope phase.

arXiv comment12 pages, 9 figures, accepted for publication in The Astrophysical Journal

References in corpus (21)

• The Necklace: equatorial and polar outflows from the binary central star of the new planetary nebula IPHASXJ194359.5+170901
• An Interacting Binary System Powers Precessing Outflows of an Evolved Star
• The double-degenerate, super-Chandrasekhar nucleus of the planetary nebula Henize 2-428
• Constraints on Common Envelope Magnetic Fields from Observations of Jets in Planetary Nebulae
• Planetary nebula or symbiotic Mira? Near infrared colours mark the difference
• A carbon dwarf wearing a Necklace: first proof of accretion in a post-common-envelope binary central star of a planetary nebula with jets
• The evolution of planetary nebulae. VIII. True expansion rates and visibility times
• A Detailed Morpho-Kinematic Model of the Eskimo, NGC 2392. A Unifying View with the Cat's Eye and Saturn Planetary Nebulae
• The outflows and 3D structure of NGC 6337, a planetary nebula with a close binary nucleus
• Space Velocity and Time Span of Jets in Planetary Nebulae
• Abundances of Planetary Nebula NGC2392
• A spatio-kinematic model for jets in post-AGB stars
• NGC 7469 as seen by MEGARA: new results from high-resolution IFU spectroscopy
• High velocity string of knots in the outburst of the Planetary Nebula Hb4
• An in-depth reanalysis of the alleged type Ia supernova progenitor Henize 2-428
• The constant-velocity highly collimated outflows of the planetary nebula He 2-90
• The post-common-envelope X-ray binary nucleus of the planetary nebula NGC 2392
• Determining mass accretion and jet mass-loss rates in post-asymptotic giant branch binary systems
• Variable Hard X-ray Emission From the Central Star of the Eskimo Nebula
• The Decline and Fall of the Youngest Planetary Nebula
• Rummaging inside the Eskimo's parka: Variable asymmetric PN fast wind and a binary nucleus?

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• Planetary nebulae with Wolf-Rayet-type central stars -- II. Dissecting the compact planetary nebula M2-31 with GTC MEGARA
• Rings and arcs around evolved stars -- III. Physical conditions of the ring-like structures in the planetary nebula IC 4406 revealed by MUSE
• Morpho-kinematic and photoionization models of the multipolar structures in planetary nebula NGC 6572
• Adjusting the bow-tie: A morpho-kinematic study of NGC40
• [Fe II] 1.644$\mu$m imaging survey of planetary nebulae with low-ionisation structures
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