我们提出了一个可能有大量的面外尘埃的边缘星系的列表。从边缘星系表中选取了23个边缘星系作为目标星系，利用三维辐射转移模型对它们的星系演化探测器远紫外图像进行了拟合。星系模型由两个圆盘描述：一个是光源，另一个是尘埃。通过采用称为差分进化的全局优化方法找到最佳拟合参数。为了使用最佳拟合参数找到具有大量面外尘埃的星系，我们绘制了尺度高度与星系直径的比值：$z_s/D_{25,ph}$（光源）与$z_d/D_{25,ph}$（尘埃）。我们发现分别有17个和6个星系落在$(z_s/D_{25,ph}\times100)>0.2$和$(z_s/D_{25,ph}\times100)<0.2$区域。前者称为“高群”，后者称为“低群”。根据以下几点，我们认为“高群”可能是具有大量面外尘埃的星系，而“低群”可能是具有少量面外尘埃的星系，即典型的星系薄盘：（1）“高群”和“低群”在$z_s/D_{25,ph}$ vs $z_d/D_{25,ph}$图上相对于光学辐射转移研究参考值的相对位置;（2）年轻恒星星族的标度高度比老恒星星族低;（3）一个表明面外尘埃存在的检验结果使拟合结果高估了$z_s$和$z_d$。我们还研究了远紫外发光度（$L_{FUV}/D^2_{25,ph}$）的表面密度上的基团分离的依赖性，但没有发现很强的依赖性。
英文摘要：
We present a list of edge-on galaxies that might have substantial extraplanar dust. Twenty-three edge-on galaxies were selected as target galaxies from an edge-on galaxy catalog, and their Galaxy Evolution Explorer far-ultraviolet images were fitted with three dimensional radiative transfer galaxy model. The galaxy model is described by two disks: one for the light source and the other for the dust. The best-fit parameters were found by employing a global optimization method, called differential evolution. To find the galaxies with substantial extraplanar dust using the best-fit parameters, we plotted the ratio of scale-height to galactic diameter: $z_s/D_{25,ph}$ (light source) vs $z_d/D_{25,ph}$ (dust). We found that 17 and 6 galaxies fall on the region of $(z_s/D_{25,ph}\times100)>0.2$ and $(z_s/D_{25,ph}\times100)<0.2$, respectively. The former is named as "high-group" and the latter is named as "low-group." We conclude that "high-group" is likely to be the galaxies with substantial extraplanar dust, while "low-group" is likely to be the ones with little extraplanar dust, i.e. typical galactic thin disk, based on the following points: (1) the relative positions of "high-group" and "low-group" on the plot $z_s/D_{25,ph}$ vs $z_d/D_{25,ph}$ with respect to the reference values from optical radiative transfer studies; (2) the lower scale-height of the young stellar population than the old stellar population; and (3) a test result that shows the existence of extraplanar dust makes $z_s$ and $z_d$ overestimated in the fitting results. We also examined the dependence of the group separation on the surface density of far-ultraviolet luminosity ($L_{FUV}/D^2_{25,ph}$), but found no strong dependence.
Seeking Edge-on Galaxies with Substantial Extraplanar Dust Using a Radiative Transfer Model: Determination of the Model Parameter Uncertainties for EON_10.477_41.954 (FGC 79)
Gems of the Galaxy Zoos -- a Wide-Ranging Hubble Space Telescope Gap-Filler Program
我们描述了银河系动物园的宝石（动物园宝石）项目，一个填补空白的项目，在哈勃太空望远镜的时间表中使用短窗口。与以前的快照计划一样，目标是根据位置从一个池中提取的;我们结合了志愿者在银河动物园和无线电银河动物园公民科学项目中选择的对象。Zoo Gems使用Advanced Camera for Surveys（ACS）的曝光来解决星系形态，星际介质内容，活动星系核的宿主星系和星系演化等广泛的主题。科学案例包括研究星系的相互作用，星系中的背光尘埃，星暴后系统，环和特殊的螺旋图案，通常的颜色-形态关系的异常值，绿豆紧凑的星暴系统，螺旋宿主星系的双射电源，以及活动星系核周围的扩展发射线区域。对于这些科学类别中的许多类别，从更大的列表中最终选择目标是通过投票过程使用公众输入。到目前为止的亮点包括在蓝色的，显然是早期类型的星系中紧密缠绕的螺旋结构的流行，一个几乎完整的爱因斯坦环从一个群透镜，在较低的表面亮度周围的紧凑的绿豌豆星爆的红色组件，以及螺旋星系托管大型双射电源的高概率例子。
The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies-VIII. A Census of Long-Period Variable Stars across the Andromeda Dwarf Satellite System
Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences（孔科利天文台，HUN-REN 地球与天文学研究中心）；School of Astronomy, Institute for Research in Fundamental Sciences (IPM)（基础科学研究所天文学院）；Lennard-Jones Laboratories, Keele University（基尔大学伦纳德-琼斯实验室）；Department of Physical Sciences, The Open University（开放大学物理科学系）；School of Physics & Astronomy, University of Southampton（南安普顿大学物理与天文学院）；Iranian National Observatory, Institute for Research in Fundamental Sciences (IPM)（伊朗国家天文台，基础科学研究所）
