Discovery of the Highly-Neutronized Ejecta Clump with Enhanced Abundances of Titanium and Chromium in the Type Ia Supernova Remnant 3C 397

Abstract

The supernova remnant (SNR) 3C 397 is thought to originate from a Type Ia supernova (SN Ia) explosion of a near-Chandrasekhar-mass ($M_{\mathrm{Ch}}$) progenitor, based on the enhanced abundances of Mn and Ni revealed by previous X-ray study with Suzaku. Here we report follow-up XMM-Newton observations of this SNR, conducted with the aim of investigating the detailed spatial distribution of the Fe-peak elements. We have discovered an ejecta clump with extremely high abundances of Ti and Cr, in addition to Mn, Fe, and Ni, in the southern part of the SNR. The Fe mass of this ejecta clump is estimated to be $\sim$ 0.06 $M_{\odot }$, under the assumption of a typical Fe yield for SNe Ia (i.e., $\sim$ 0.8 $M_{\odot }$). The observed mass ratios among the Fe-peak elements and Ti require substantial neutronization that is achieved only in the innermost regions of a near-$M_{\mathrm{Ch}}$ SN Ia with a central density of ${\rho }_c\sim 5\times 10^9$ g cm${}^{-3}$, significantly higher than typically assumed for standard near-$M_{\mathrm{Ch}}$ SNe Ia (${\rho }_c\sim 2\times 10^9$ g cm${}^{-3}$). The overproduction of the neutron-rich isotopes (e.g., ${}^{50}$Ti and ${}^{54}$Cr) is significant in such high-${\rho }_c$ SNe Ia, with respect to the solar composition. Therefore, if 3C 397 is a typical high-${\rho }_c$ near-$M_{\mathrm{Ch}}$ SN Ia remnant, the solar abundances of these isotopes could be reproduced by the mixture of the high- and low-${\rho }_c$ near-$M_{\mathrm{Ch}}$ and sub-$M_{\mathrm{Ch}}$ Type Ia events, with $\lesssim$ 20 % being high-${\rho }_c$ near-$M_{\mathrm{Ch}}$.

arXiv commentAccepted by ApJL; 9 pages with 4 figures and 1 table

References in corpus (41)

• On the Absorption of X-rays in the Interstellar Medium
• The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
• Nucleosynthesis in Chandrasekhar Mass Models for Type Ia Supernovae and Constraints on Progenitor Systems and Burning-Front Propagation
• Three-dimensional delayed-detonation models with nucleosynthesis for Type Ia supernovae
• Rates and Delay Times of Type Ia Supernovae
• Discriminating the Progenitor Type of Supernova Remnants with Iron K-Shell Emission
• Neutron-rich chromium isotope anomalies in supernova nanoparticles
• Nucleosynthesis in Two-Dimensional Delayed Detonation Models of Type Ia Supernova Explosions
• Explosive Nucleosynthesis in Near-Chandrasekhar Mass White Dwarf Models for Type Ia Supernovae: Dependence on Model Parameters
• Solar abundance of manganese: a case for the existence of near Chandrasekhar-mass Type Ia supernova progenitors
• New Type Ia supernova Yields and the Manganese and Nickel Problems in the Milky Way and Dwarf Spheroidal Galaxies
• A Chandrasekhar Mass Progenitor for the Type Ia Supernova Remnant 3C 397 from The Enhanced Abundances of Nickel and Manganese
• The Merger Rate of Binary White Dwarfs in the Galactic Disk
• Solar abundance ratios of the iron-peak elements in the Perseus Cluster
• Formation of Dust in the Ejecta of Type Ia Supernovae
• Progenitors of type Ia supernovae
• Using late-time optical and near-infrared spectra to constrain Type Ia supernova explosion properties
• Explosive Nucleosynthesis in Sub-Chandrasekhar Mass White Dwarf Models for Type Ia Supernovae: Dependence on Model Parameters
• Single Degenerate Models for Type Ia Supernovae Progenitor's Evolution and Nucleosythesis Yields
• Evidence for Sub-Chandrasekhar Type Ia Supernovae from Stellar Abundances in Dwarf Galaxies
• Sensitivity study of explosive nucleosynthesis in Type Ia supernovae: I. Modification of individual thermonuclear reaction rates
• Origin of central abundances in the hot intra-cluster medium - II. Chemical enrichment and supernova yield models
• Extremely ${}^{54}$Cr- and ${}^{50}$Ti-rich presolar oxide grains in a primitive meteorite: Formation in rare types of supernovae and implications for the astrophysical context of solar system birth
• Nucleosynthesis imprints from different Type Ia Supernova explosion scenarios and implications for galactic chemical evolution
• Chandra Spatially Resolved Spectroscopic Study and Multi-Wavelength Imaging of the Supernova Remnant 3C 397 (G41.1-0.3)
• Final Fates of Rotating White Dwarfs and Their Companions in the Single Degenerate Model of Type Ia Supernovae
• The late-time light curve of the type Ia supernova SN 2011fe
• Manganese Indicates a Transition from Sub- to Near-Chandrasekhar Type Ia Supernovae in Dwarf Galaxies
• The effects of different Type Ia SN yields on Milky Way chemical evolution
• Evidence for a Sub-Chandrasekhar Mass Type~Ia Supernova in the Ursa Minor Dwarf Galaxy
• Observational evidence for high neutronization in supernova remnants: implications for Type Ia supernova progenitors
• The Origin of the Iron-Rich Knot in Tycho's Supernova Remnant
• High-entropy ejecta plumes in Cassiopeia A from neutrino-driven convection
• Nucleosynthesis Constraints on the Explosion Mechanism for Type Ia Supernovae
• Final Evolution and Delayed Explosions of Spinning White Dwarfs in Single Degenerate Models for Type Ia Supernovae
• 5.9 keV Mn K-shell X-ray luminosity from the decay of 55Fe in Type Ia supernova models
• Constraining The Single-Degenerate Channel of Type Ia Supernovae With Stable Iron-Group Elements in SNR 3C 397
• An analysis of the X-ray emission from the supernova remnant 3C397
• Spatial distribution of X-ray emitting ejecta in Tycho's SNR: indications of shocked Titanium
• A Nucleosynthetic Origin for the Southwestern Fe-rich Structure in Kepler's Supernova Remnant
• Evidence of a Type Ia Progenitor for Supernova Remnant 3C 397

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