论文标题
紫外灰尘衰减是恒星质量的函数及其与红移的进化
UV dust attenuation as a function of stellar mass and its evolution with redshift
论文作者
论文摘要
研究紫外粉尘衰减及其与其他星系参数（例如恒星质量）的关系在多波长研究中起着重要作用。这项工作将灰尘衰减与恒星形成星系的恒星质量以及红移的演变有关。使用了根据红外过量计算的灰尘衰减估算的星系样本。尘埃衰减与恒星质量数据（以红移箱为单位）是由单个参数线性函数建模的，假设低质量星系的非零恒定恒定恒定灰尘衰减。但是，这种效果的起源仍有待确定并探索了几种可能性（实际的高灰尘含量，灰尘与金属比的变化，恒星粉尘几何形状的变化）。然后，该模型的最合适参数用于研究宇宙尘埃衰减的红移演化，并发现与文献的结果一致。这项工作还为尘埃衰减的红移演变提供了证据 - 恒星质量关系，正如最高红移范围内的最新作品所暗示的那样。
Studying the UV dust attenuation, as well as its relation to other galaxy parameters such as the stellar mass, plays an important role in multi-wavelength research. This work relates the dust attenuation to the stellar mass of star forming galaxies, and its evolution with redshift. A sample of galaxies with an estimate of the dust attenuation computed from the infrared excess was used. The dust attenuation vs. stellar mass data, separated in redshift bins, was modelled by a single parameter linear function, assuming a nonzero constant apparent dust attenuation for low mass galaxies. But the origin of this effect is still to be determined and several possibilities are explored (actual high dust content, variation of the dust-to-metal ratio, variation of the stars-dust geometry). The best-fitting parameter of this model is then used to study the redshift evolution of the cosmic dust attenuation and is found to be in agreement with results from the literature. This work also gives evidence to a redshift evolution of the dust attenuation - stellar mass relationship, as is suggested by recent works in the highest redshift range.
