Mapping Excitation in the Inner Regions of the Planetary Nebula NGC 5189 using HST WFC3 Imaging

Abstract

The planetary nebula (PN) NGC 5189 around a Wolf-Rayet [WO] central star demonstrates one of the most remarkable complex morphologies among PNe with many multi-scale structures, showing evidence of multiple outbursts from an AGB progenitor. In this study we use multi-wavelength Hubble Space Telescope Wide Field Camera 3 (WFC3) observations to study the morphology of the inner 0.3 pc $\times$ 0.2 pc region surrounding the central binary that appears to be a relic of a more recent outburst of the progenitor AGB star. We applied diagnostic diagrams based on emission line ratios of H$\alpha$ $\lambda$6563, [O III] $\lambda$5007, and [S II] $\lambda \lambda$6717,6731 images to identify the location and morphology of low-ionization structures within the inner nebula. We distinguished two inner, low-ionization envelopes from the ionized gas, within a radius of 55 arcsec ($\sim$ 0.15 pc) extending from the central star: a large envelope expanding toward the northeast, and its smaller counterpart envelope in the opposite direction toward the southwest of the nebula. These low-ionization envelopes are surrounded by a highly-ionized gaseous environment. We believe that these low-ionization expanding envelopes are a result of a powerful outburst from the post-AGB star that created shocked wind regions as they propagate through the previously expelled material along a symmetric axis. Our diagnostic mapping using high-angular resolution line emission imaging can provide a novel approach to detection of low-ionization regions in other PNe, especially those showing a complex multi-scale morphology.

arXiv comment10 pages, 5 figures, accepted for publication in the Astrophysical Journal

References in corpus (44)

• Theoretical Modeling of Starburst Galaxies
• The Host Galaxies and Classification of Active Galactic Nuclei
• Nuclear Activity in Nearby Galaxies
• The SAURON project XVI: On the Sources of Ionisation for the Gas in Elliptical and Lenticular Galaxies
• The nature of LINER galaxies: Ubiquitous hot old stars and rare accreting black holes
• Low-Mass Binary Induced Outflows from Asymptotic Giant Branch Stars
• Young Planetary Nebulae: Hubble Space Telescope Imaging and a New Morphological Classification System
• Preplanetary Nebulae: An HST Imaging Survey and a New Morphological Classification System
• Binary planetary nebulae nuclei towards the Galactic bulge. II. A penchant for bipolarity and low-ionisation structures
• The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale
• Isolated vs. Common Envelope Dynamos in Planetary Nebula Progenitors
• Nearby early-type galaxies with ionized gas.IV. Origin and powering mechanism of the ionized gas
• Low-ionization structures in planetary nebulae: confronting models with observations
• Why Magnetic Fields Cannot be the Main Agent Shaping Planetary Nebulae
• Knots in the Helix Nebula found in H2
• Three Dimensional Magneto-Hydrodynamical Modeling of Planetary Nebuale ~ II: The Formation of Bipolar and Elliptical Nebulae with Point-Symmetric Structures and Collimated Outflows
• Angular dimensions of planetary nebulae
• Unraveling the Helix Nebula: Its Structure and Knots
• Application of MHD Disk Wind Solutions to Planetary/Protoplanetary Nebulae
• Chemistry and clumpiness in planetary nebulae
• The Chandra Planetary Nebula Survey (ChanPlaNS). II. X-ray Emission from Compact Planetary Nebulae
• A radial velocity survey for post-common-envelope Wolf-Rayet central stars of planetary nebulae: First results and discovery of the close binary nucleus of NGC 5189
• Analysis of chemical abundances in planetary nebulae with [WC] central stars. I. Line intensities and physical conditions
• Low-ionization structures in planetary nebulae - I: physical, kinematic and excitation properties
• Multiple and Precessing Collimated Outflows in the Planetary Nebula IC 4634
• Morphological Structures of Planetary Nebulae
• A High-Resolution Multiband Survey of Westerlund 2 With the Hubble Space Telescope I: Is the Massive Star Cluster Double?
• CHEERS Results from NGC 3393, II: Investigating the Extended Narrow Line Region using Deep Chandra Observations and Hubble Narrow Line Imaging
• Planetary nebulae that cannot be explained by binary systems
• A wind-shell interaction model for multipolar planetary nebulae
• Studies of NGC 6720 with Calibrated HST WFC3 Emission-Line Filter Images--I: Structure and Evolution
• Unveiling shocks in planetary nebulae
• Low-ionization pairs of knots in planetary nebulae: physical properties and excitation
• K 4-47: a planetary nebula excited by photons and shocks
• Mapping Seyfert and LINER Excitation Modes in the Inner kpc of NGC 3393
• Hu1-2: a metal-poor bipolar planetary nebula with fast collimated outflows
• IFU spectroscopy of Southern Planetary Nebulae IV: A Physical Model for IC 418
• Observations and three-dimensional photoionization modelling of the Wolf-Rayet planetary nebula Abell 48
• UV spectral analysis of very hot H-deficient [WCE]-type central stars of planetary nebulae: NGC 2867, NGC 5189, NGC 6905, Pb 6, and Sand 3
• IFU spectroscopy of Southern Planetary Nebulae V: Low-ionization structures
• Fast, low-ionization emission regions of the planetary nebula M2-42
• Discovery of collimated bipolar outflows in the planetary nebula Th 2-A
• The collimated outflows of the planetary nebula Hu1-2: proper motion and radial velocity measurements
• The bow-shock and high-speed jet in the faint, 40 arcmin diameter, outer halo of the evolved Helix planetary nebula (NGC 7293)

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• 3D spatio-kinematic modeling of Abell 48, a planetary nebula around a Wolf-Rayet [WN] star
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