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

Abstract

The planetary nebula (PN) Abell 48 (PN G029.0+00.4) is around a rare Wolf-Rayet [WN5] star whose stellar history is as yet unknown. Using the integral field observations of the H$\alpha$ $\lambda$6563 and [N II] $\lambda$6584 line emissions, we conducted a comprehensive spatio-kinematic analysis of this PN. A three-dimensional spatio-kinematic ionization model was developed with the kinematic modeling tool SHAPE to replicate the observed spatially-resolved velocity channels and position--velocity diagrams. According to our kinematic analysis of the H$\alpha$ emission, this object possesses a deformed elliptic toroidal shell with an outer radius of 23 arcsec and a thickness of 15 arcsec associated with an integrated H$\alpha$ emission-line expansion of $\sim 35\pm 5$ km s${}^{-1}$, a maximum poloidal expansion of around $70\pm 20$ km s${}^{-1}$ at an inclination angle of $\sim 30^{\circ }$ with respect to the line of sight, and a position angle of $\sim 130^{\circ }$ measured from east toward north in the equatorial coordinate system. Furthermore, [N II] kinematic modeling reveals the presence of narrow ($\sim 3$ arcsec) exterior low-ionization structures surrounding the main elliptical shell, which could have formed as a result of shock collisions with the interstellar medium. The torus-shaped morphology of this PN could be related to its unusual hydrogen-deficient [WN] nucleus that needs to be inspected further.

arXiv comment7 pages, 6 figures, 1 table, accepted by MNRAS, interactive 3D model available on https://skfb.ly/o7nxA and https://astroneb.github.io/Abell48_Kinematic_Model/figure5/ archived on https://doi.org/10.5281/zenodo.5511247

References in corpus (31)

• The Pan-STARRS1 Database and Data Products
• The Aao/Ukst Supercosmos H-alpha Survey (SHS)
• The Wide Field Spectrograph (WiFeS)
• The Wide Field Spectrograph (WiFeS): Performance and Data Reduction
• Shape: A 3D Modeling Tool for Astrophysics
• A Hidden Population of Massive Stars with Circumstellar Shells Discovered with the Spitzer Space Telescope
• The interaction of planetary nebulae and their AGB progenitors with the interstellar medium
• The metallicity extremes of the Sagittarius dSph using SALT spectroscopy of PNe
• The Planetary Nebula population of the Sagittarius Dwarf Spheroidal Galaxy
• Proof of polar ejection fom the close-binary core of the planetary nebula Abell 63
• Abell 41: shaping of a planetary nebula by a binary central star?
• Newly Discovered Wolf-Rayet and Weak Emission-Line Central Stars of Planetary Nebulae
• The central star of the planetary nebula PB 8: a Wolf-Rayet-type wind of an unusual WN/WC chemical composition
• A Detailed Morpho-Kinematic Model of the Eskimo, NGC 2392. A Unifying View with the Cat's Eye and Saturn Planetary Nebulae
• Deciphering the bipolar planetary nebula Abell 14 with 3D ionization and morphological studies
• Abell 48 - a rare WN-type central star of a planetary nebula
• The morphology and kinematics of the Fine Ring Nebula, planetary nebula Sp 1, and the shaping influence of its binary central star
• The planetary nebula Abell 48 and its [WN] nucleus
• The diffusion-induced nova scenario. CK Vul and PB 8 as possible observational counterparts
• IC 4663: The first unambiguous [WN] Wolf-Rayet central star of a planetary nebula
• Hydrodynamical Velocity Fields in Planetary Nebulae
• Morpho-kinematic analysis of the point-symmetric, bipolar planetary nebulae Hb 5 and K 3-17, a pathway to poly-polarity
• A study of the kinematics and binary-induced shaping of the planetary nebula HaTr 4
• High velocity string of knots in the outburst of the Planetary Nebula Hb4
• 3-D modelling of the collimated bipolar outflows of compact planetary nebulae with WR-type central stars
• Observations and three-dimensional photoionization modelling of the Wolf-Rayet planetary nebula Abell 48
• Mapping Excitation in the Inner Regions of the Planetary Nebula NGC 5189 using HST WFC3 Imaging
• Fast, low-ionization emission regions of the planetary nebula M2-42
• Discovery of collimated bipolar outflows in the planetary nebula Th 2-A
• WR 148: Identifying the companion of an extreme runaway massive binary
• Physical and chemical properties of Wolf-Rayet planetary nebulae

Cited by in corpus (3)

• Morpho-kinematic properties of Wolf-Rayet planetary nebulae
• A primer on the formation and evolution of hydrogen deficient Central Stars of Planetary Nebulæ and Related Objects
• Morphologies of Wolf-Rayet Planetary Nebulae based on IFU Observations