Multiwavelength Analysis of a Nearby Heavily Obscured AGN in NGC 449

We presented the multiwavelength analysis of a heavily obscured active galactic nucleus (AGN) in NGC 449. We first constructed a broadband X-ray spectrum using the latest NuSTAR and XMM-Newton data. Its column density ($\simeq {10}^{24}{\mathrm{c}\mathrm{m}}^{-2}$) and photon index ($\mathrm{\Gamma }\simeq 2.4$) were reliably obtained by analyzing the broadband X-ray spectrum. However, the scattering fraction and the intrinsic X-ray luminosity could not be well constrained. Combined with the information obtained from the mid-infrared (mid-IR) spectrum and spectral energy distribution (SED) fitting, we derived its intrinsic X-ray luminosity ($\simeq 8.54\times {10}^{42}{\mathrm{e}\mathrm{r}\mathrm{g}\mathrm{s}}^{-1}$) and scattering fraction ($f_{\mathrm{s}\mathrm{c}\mathrm{a}\mathrm{t}}\simeq 0.26\mathrm{\%}$). In addition, we also derived the following results: (1). The mass accretion rate of central AGN is about $2.54\times {10}^{-2}{\mathrm{M}}_{\odot }{\mathrm{y}\mathrm{r}}^{-1}$, and the Eddington ratio is $8.39\times {10}^{-2}$; (2). The torus of this AGN has a high gas-to-dust ratio ($N_{\mathrm{H}}\mathrm{/}{A}_{\mathrm{V}}=8.40\times {10}^{22}{\mathrm{c}\mathrm{m}}^{-2}{\mathrm{m}\mathrm{a}\mathrm{g}}^{-1}$); (3). The host galaxy and the central AGN are both in the early stage of co-evolution.