Source clustering in the Hi-GAL survey determined using a minimum spanning tree method
Source clustering in the Hi-GAL survey determined using a minimum spanning tree method
复制标题
使用最小生成树方法确定 Hi-GAL 调查中的源聚类
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
E. Schisano
中科院分区：
文献类型：
--
作者：
M. Beuret;N. Billot;L. Cambr'esy;D. Eden;D. Elia;S. Molinari;S. Pezzuto;E. Schisano
其目的是研究赫歇尔红外银河系平面勘测(Hi-GAL)在银河系经度-71到67度范围内的远红外源的集群。这些团块及其空间分布是分子云中原始条件的印记。这将产生一系列密度过大的问题。使用最小生成树(MST)方法识别二维超密度。通过在日心距离内折叠，星表得到了进一步的改进，产生了更可靠的过密度，这是星系团的候选。我们发现了1,633个超密度，成员超过10个。其中，由于距离的可靠性，496个被定义为候选集群，还有1137个潜在候选集群。候选星团的空间分布在第一象限和第四象限是不同的，所有星团都遵循银河系的螺旋结构。候选星团是分形的。聚集态和孤立态的团块质量函数在统计上彼此是不可区分的，并且与Kroupa的初始质量函数一致。
The aims are to investigate the clustering of the far-infrared sources from the Herschel infrared Galactic Plane Survey (Hi-GAL) in the Galactic longitude range of -71 to 67 deg. These clumps, and their spatial distribution, are an imprint of the original conditions within a molecular cloud. This will produce a catalogue of over-densities. The minimum spanning tree (MST) method was used to identify the over-densities in two dimensions. The catalogue was further refined by folding in heliocentric distances, resulting in more reliable over-densities, which are cluster candidates. We found 1,633 over-densities with more than ten members. Of these, 496 are defined as cluster candidates because of the reliability of the distances, with a further 1,137 potential cluster candidates. The spatial distributions of the cluster candidates are different in the first and fourth quadrants, with all clusters following the spiral structure of the Milky Way. The cluster candidates are fractal. The clump mass functions of the clustered and isolated are statistically indistinguishable from each other and are consistent with Kroupa's initial mass function.
盾牌切线区域的恒星形成和银河系环境的影响
DOI：
10.48550/arxiv.1203.0295
发表时间：
2012
期刊：
--
影响因子：
--
作者：
Eden D
通讯作者：
Eden D
影响因子：
4.8
作者：
D. Eden;T. Moore;J. Urquhart;D. Elia;R. Plume;A. Rigby;M. Thompson
通讯作者：
D. Eden;T. Moore;J. Urquhart;D. Elia;R. Plume;A. Rigby;M. Thompson