Supernova Ejecta with Crystalline Silicate Dust in the Supernova Remnant MSH 15-52

• DOI: 10.48550/arxiv.2310.15733
• Publication Date: 2023-01-01
• Authors: Hyun-Jeong Kim; Bon‐Chul Koo; Takashi Onaka
• Keywords: QB460-466; 13. Climate action; Interstellar medium; Supernova remnants; Astrophysics of Galaxies (astro-ph.GA); FOS: Physical sciences; Astrophysics; 7. Clean energy; Infrared spectroscopy; Astrophysics - Astrophysics of Galaxies

IRAS 15099-5856 in the young supernova remnant (SNR) MSH 15-52 is first and only SNR-associated object with crystalline silicate dust detected so far, although its nature origin of are still unclear. In this paper, we present high-resolution mid-infrared (MIR) imaging observations bright central compact source IRS1 to study spatial distributions gas analysis Spitzer MIR spectrum explore IRS1. The images obtained T-ReCS attached on Gemini South telescope show a complicated, inhomogeneous morphology clumps diffuse emission [Ne II] 12.81 $\mu$m Qa 18.30 $\mu$m, which confirms that an extended externally heated by nearby O star Muzzio 10, candidate for binary companion progenitor star. reveals several ionic lines including strong line, but no hydrogen line detected. We model using photoionization code CLOUDY varying elemental composition. abundance derived from close SN ejecta depleted enhanced metals, particularly neon, argon, iron. Our results imply originates suggest possibility formation newly-formed dust.