论文标题
原始的内星系调查（PIGS）VI：在442.8 nm和862.1 nm的两个DIB之间的不同垂直分布
The Pristine Inner Galaxy Survey (PIGS) VI: Different vertical distributions between two DIBs at 442.8 nm and 862.1 nm
论文作者
论文摘要
尽管漫射的星际乐队（DIB）是在100年前发现的，但对于大多数人来说，它们的起源仍然未知。研究不同DIB之间的相关性是研究其载体行为和分布的重要方法。基于原始的Galaxy调查中堆叠成千上万的光谱，我们研究了两个dibs的相关性，即442.8 nm（$λ$ 442.8）和862.1 nm（$λ$ 862.1），以及尘埃范围的尘埃范围，在跨度差异范围（$ 4^{\ circ} \，{<} \，| b | \，{<} \，15^{\ circ} $）朝向银河中心（$ | \ ell | \ | \，{<} \，11^{\ circ} $）。紧密的线性强度相关性可以在$λ$ 442.8，$λ$ 862.1和$ | b | \，{<} \，12^{\ circ} $或$ e（b-v）\，{>} \，{>} \ \，0.3 $ mag中。对于$ | b | \，{>} \，12^{\ circ} $，$λ$ 442.8和$λ$ 862.1相对于灰尘晶粒，相对强度更大。 $ | b | $和$ e（b-v）$之间的相对强度在$λ$ 442.8和$λ$ 862.1之间的系统变化得出的结论是，这两个DIB不共享共同的承运人。此外，$λ$ 862.1的载体在高纬度地区比$ 442.8的载体更丰富。这项工作可以作为一个示例，显示了涵盖较大纬度范围的DIB研究的重要性和潜力。
Although diffuse interstellar bands (DIBs) were discovered over 100 years ago, for most of them, their origins are still unknown. Investigation on the correlations between different DIBs is an important way to study the behavior and distributions of their carriers. Based on stacking thousands of spectra from the Pristine Inner Galaxy Survey, we study the correlations between two DIBs at 442.8 nm ($λ$442.8) and 862.1 nm ($λ$862.1), as well as the dust grains, in a range of latitude spanning ${\sim}22^{\circ}$ ($4^{\circ}\,{<}\,|b|\,{<}\,15^{\circ}$) toward the Galactic center ($|\ell|\,{<}\,11^{\circ}$). Tight linear intensity correlations can be found between $λ$442.8, $λ$862.1, and dust grains for $|b|\,{<}\,12^{\circ}$ or $E(B-V)\,{>}\,0.3$ mag. For $|b|\,{>}\,12^{\circ}$, $λ$442.8 and $λ$862.1 present larger relative strength with respect to the dust grains. A systematic variation of the relative strength between $λ$442.8 and $λ$862.1 with $|b|$ and $E(B-V)$ concludes that the two DIBs do not share a common carrier. Furthermore, the carrier of $λ$862.1 is more abundant at high latitudes than that of $λ$442.8. This work can be treated as an example showing the significance and potentials to the DIB research covering a large latitude range.
