论文标题
明智的J044232.92+322734.9：红移1.1的星形星系通过银河尘土看见吗？
WISE J044232.92+322734.9: A star-forming galaxy at redshift 1.1 seen through a Galactic dust clump?
论文作者
论文摘要
对亚毫米来源看到的物理无关的背景或前景对物体是嵌入银河粉尘块中的年轻恒星物体的潜在污染物，以及亚毫米级星系（SMG）的多波长对应物。 We employed the near-infrared and mid-infrared data from the Wide-field Infrared Survey Explorer (WISE) and the submillimetre data from the Planck satellite, and uncovered a source, namely WISE J044232.92+322734.9, whose WISE infrared colours suggest that it is a star-forming galaxy (SFG), and which is seen in projection towards the Planck-detected dust集团PGCC G169.20-8.96。我们使用Magphys+Photo- $ Z $频谱能量分布代码来得出J044232.92的光度红移和物理特性。红移得出为$ z {\ rm phot} = 1.132^{+0.280} _ { - 0.165} $，而例如，IR（8-1 000 $μ$ m）和星形的亮度和星形的亮度和星形形成率是美元$ {\ rm sfr} = 191^{+580} _ { - 146} $ $ $ {\ rm m} _ {\ odot} $ yr $^{ - 1} $。 $ l _ {\ rm ir} $的派生值表明J044232.92可能是一个超湿的红外星系，我们发现它与1.132的RedShift的主序列SFG一致。此外，J044232.92的估计物理特性与SMG相当。需要进一步的观察结果，特别是需要高分辨率（子）毫米和无线电连续性成像，以更好地限制J044232.92的红移和物理特性，并查看该来源是否真的是通过银河粉尘团看到的银河系，特别是在$ z \ sim1.1.1 $中的SMG人群成员。
Physically unassociated background or foreground objects seen towards submillimetre sources are potential contaminants of both the studies of young stellar objects embedded in Galactic dust clumps and multiwavelength counterparts of submillimetre galaxies (SMGs). We employed the near-infrared and mid-infrared data from the Wide-field Infrared Survey Explorer (WISE) and the submillimetre data from the Planck satellite, and uncovered a source, namely WISE J044232.92+322734.9, whose WISE infrared colours suggest that it is a star-forming galaxy (SFG), and which is seen in projection towards the Planck-detected dust clump PGCC G169.20-8.96. We used the MAGPHYS+photo-$z$ spectral energy distribution code to derive the photometric redshift and physical properties of J044232.92. The redshift was derived to be $z_{\rm phot}=1.132^{+0.280}_{-0.165}$, while, for example, the stellar mass, IR (8-1 000 $μ$m) luminosity, and star formation rate were derived to be $M_{\star}=4.6^{+4.7}_{-2.5}\times10^{11}$ M$_{\odot}$, $L_{\rm IR}=2.8^{+5.7}_{-1.5}\times10^{12}$ L$_{\odot}$, and ${\rm SFR}=191^{+580}_{-146}$ ${\rm M}_{\odot}$ yr$^{-1}$. The derived value of $L_{\rm IR}$ suggests that J044232.92 could be an ultraluminous infrared galaxy, and we found that it is consistent with a main sequence SFG at a redshift of 1.132. Moreover, the estimated physical properties of J044232.92 are comparable to those of SMGs. Further observations, in particular high-resolution (sub-)millimetre and radio continuum imaging, are needed to better constrain the redshift and physical properties of J044232.92 and to see if the source really is a galaxy seen through a Galactic dust clump, in particular an SMG population member at $z\sim1.1$.
