Title: QUIJOTE Scientific Results -- VII. Galactic AME sources in the QUIJOTE-MFI Northern Hemisphere Wide-Survey Show Chinese title

Title: QUIJOTE科学结果——第七部分。 QUIJOTE-MFI北半球广域巡天中的银河系AME源

Abstract: The QUIJOTE-MFI Northern Hemisphere Wide-Survey has provided maps of the sky above declinations $-30^\circ$ at 11, 13, 17 and 19$\,$GHz. These data are combined with ancillary data to produce Spectral Energy Distributions in intensity in the frequency range 0.4--3\,000$\,$GHz on a sample of 52 candidate compact sources harbouring anomalous microwave emission (AME). We apply a component separation analysis at 1$^\circ$ scale on the full sample from which we identify 44 sources with high AME significance. We explore correlations between different fitted parameters on this last sample. QUIJOTE-MFI data contribute to notably improve the characterisation of the AME spectrum, and its separation from the other components. In particular, ignoring the 10--20\,GHz data produces on average an underestimation of the AME amplitude, and an overestimation of the free-free component. We find an average AME peak frequency of 23.6 $\pm$ 3.6$\,$GHz, about 4$\,$GHz lower than the value reported in previous studies. The strongest correlation is found between the peak flux density of the thermal dust and of the AME component. A mild correlation is found between the AME emissivity ($A_{\rm AME}/\tau_{250}$) and the interstellar radiation field. On the other hand no correlation is found between the AME emissivity and the free-free radiation Emission Measure. Our statistical results suggest that the interstellar radiation field could still be the main driver of the intensity of the AME as regards spinning dust excitation mechanisms. On the other hand, it is not clear whether spinning dust would be most likely associated with cold phases of the interstellar medium rather than with hot phases dominated by free-free radiation. Show Chinese abstract

Abstract: QUIJOTE-MFI北半球广域巡天提供了在赤纬$-30^\circ$以上的天空地图，频率为11、13、17和19$\,$GHz。 这些数据与辅助数据结合，在52个包含异常微波辐射（AME）的候选紧凑源样本中，生成了强度的光谱能量分布，频率范围为0.4--3 000$\,$GHz。 我们在整个样本上应用1$^\circ$尺度的组分分离分析，从中识别出44个具有高AME显著性的源。 我们在此最后的样本上探索了不同拟合参数之间的相关性。 QUIJOTE-MFI数据有助于显著改善AME光谱的表征及其与其他组分的分离。 特别是，忽略10--20 GHz的数据平均会导致AME振幅的低估，以及自由-自由成分的高估。 我们发现AME峰值频率的平均值为23.6$\pm$3.6$\,$GHz，比之前研究中报告的值低约4$\,$GHz。 最强的相关性是在热尘埃的峰值通量密度和AME组分的峰值通量密度之间发现的。 在AMe发射率（$A_{\rm AME}/\tau_{250}$）和星际辐射场之间发现了一种轻微的相关性。 另一方面，未发现AMe发射率与自由-自由辐射发射量之间的相关性。 我们的统计结果表明，就旋转尘埃激发机制而言，星际辐射场可能仍然是AME强度的主要驱动因素。 另一方面，尚不清楚旋转尘埃是否更可能与星际介质的冷相而非由自由-自由辐射主导的热相相关。