Abstract

We present new three-dimensional (3D) interstellar extinction maps in the \(V\) and Gaia \(G\) filters within 2 kpc of the Sun, a 3D differential extinction (dust spatial distribution density) map along lines of sight in the same space, a 3D map of variations in the ratio of the extinctions in the \(V\) and Gaia \(G\) filters within 800 pc of the Sun, and a 2D map of total Galactic extinction through the entire dust half-layer from the Sun to extragalactic space for Galactic latitudes \(|b|>13^{\circ}\). The 3D maps have a transverse resolution from 3.6 to 11.6 pc and a radial resolution of 50 pc. The 2D map has an angular resolution of 6.1 arcmin. We have produced these maps based on the Gaia DR3 parallaxes and Gaia, Pan-STARRS1, SkyMapper, 2MASS, and WISE photometry for \({\sim}100\) million stars. We have paid special attention to the space within 200 pc of the Sun and high Galactic latitudes as regions where the extinction estimates have had a large relative uncertainty so far. Our maps estimate the extinction within the Galactic dust layer from the Sun to an extended object or through the entire dust half-layer from the Sun to extragalactic space with a precision \(\sigma(A_{\textrm{V}})=0.06\) mag. This gives a high relative precision of extinction estimates even at high Galactic latitudes, where, according to our estimates, the median total Galactic extinction through the entire dust half-layer from the Sun to extragalactic objects is \(A_{\textrm{V}}=0.12\pm 0.06\) mag. We have shown that the presented maps are among the best ones in data amount, space size, resolution, precision, and other properties.

中文翻译：

---

基于盖亚和其他巡天的新星际灭绝地图

摘要

我们在太阳 2 kpc 范围内的\(V\)和 Gaia \(G\)滤波器中提出了新的三维 (3D) 星际消光图，这是沿视线的 3D 差分消光（尘埃空间分布密度）图同一空间，太阳 800 pc 范围内的\(V\)和盖亚\(G\)过滤器中灭绝比率变化的 3D 地图，以及整个尘埃半部分的银河系总灭绝的 2D 地图-从太阳到河外空间的层，用于银河纬度\(|b|>13^{\circ}\)。3D 地图的横向分辨率为 3.6 至 11.6 pc，径向分辨率为 50 pc。2D 地图的角分辨率为 6.1 弧分。我们根据 Gaia DR3 视差以及 Gaia、Pan-STARRS1、SkyMapper、2MASS 和 WISE 光度测量为\({\sim}100\)百万颗恒星制作了这些地图。我们特别关注太阳 200 度范围内的空间和银河系高纬度地区，因为迄今为止，灭绝估计具有较大的相对不确定性。我们的地图以精度\(\sigma(A_{\textrm{V}})=0.06 估计银河尘埃层内从太阳到延伸物体或从太阳到河外空间的整个尘埃半层的灭绝\)弹匣。即使在银河系高纬度地区，这也能提供相对较高的灭绝估计精度，根据我们的估计，从太阳到河外天体的整个尘埃半层的银河系总灭绝中位数为\(A_{\textrm{V} }=0.12\pm 0.06\)星等。我们已经证明，所提供的地图在数据量、空间大小、分辨率、精度和其他属性方面都是最好的。