Dust Mass Associated with the Supernova Remnant IC 443 when Emission Meets Extinction

TL;DR

This study estimates the dust mass of supernova remnant IC 443 using infrared emission and visual extinction data, finding consistent results that enhance understanding of dust properties in such remnants.

Contribution

It provides a combined analysis of dust mass in IC 443 from infrared SED fitting and extinction mapping, offering a more comprehensive understanding of dust distribution and properties.

Findings

Dust mass from infrared emission: ~66 M_sun

Dust mass from extinction: ~46-66 M_sun

Infrared and extinction estimates are mutually consistent

Abstract

The dust mass of the well-known supernova remnant (SNR) IC 443 is estimated from both the infrared emission and the visual extinction. With photometry to the images taken by \emph{Spitzer}, \emph{WISE}, \emph{IRAS}, \emph{AKARI} and \emph{Planck}, the spectral energy distribution (SED) of the dust is obtained after subtracting the synchrotron radiation and considering the spectral line emission. The dust mass is derived from fitting the SED by a two-component model, which results in a warm component of the temperature of $\sim$ 53 K and the mass of 0.1 $M_\odot$, and a cold component of the temperature of $\sim 17$ K and the mass of 46 $M_\odot$. On the other hand, the dust mass is derived to be $\sim$ 66 $M_\odot$ from the visual extinction of IC 443 which is identified from the 3D Bayestar extinction map and its coincidence with the infrared emission morphology. Roughly the dust mass derived from the infrared emission and the extinction agree mutually. However, the dust mass derived from the infrared emission can be adjusted to be more consistent with that from the extinction by using different dust opacity property or considering optically thick radiation. In addition, the distribution of dust temperature and mass is analyzed by fitting the SED pixel by pixel.