标题： 28个强引力透镜场的光谱调查：星系团星表 显示英文标题

标题： A Spectroscopic Survey of the Fields of 28 Strong Gravitational Lenses: The Group Catalog

摘要： 通过在28个星系尺度强引力透镜场中的大规模独特光谱调查，我们在26个采样充分的场中识别出星系团。 使用团块查找算法，我们找到至少包含五个成员星系的210个团块；中位数成员数为八个。 我们的样本红移范围为0.04 $\le z_{grp} \le$ 0.76，中位数为0.31，包括174个团块具有 $0.1 < z_{grp} < 0.6$。 团块的径向速度弥散度为60 $\le \sigma_{grp} \le$ 1200 km s$^{-1}$，中位数为350 km s$^{-1}$。 我们还在B0712+472场发现一个红移为 $z =$ 0.29的超团块，由三个主要团块组成。 我们在敏感红移范围内恢复了类似 $\sim$ 的85%之前在这些场中报告的团块，并发现了187个新的至少包含五个成员的团块。 我们的小组目录的特性，特别是1）$\sigma_{grp}$的分布，2）所有样本星系中作为小组成员的比例，以及3）具有显著次结构的小组的比例，与其他目录的特性一致。 小组的维里质量分布与理论预期相符。 在透镜星系中，26个中有12个（46%）（B1422+231，B1600+434，B2114+022，FBQS J0951+2635，HE0435-1223，HST J14113+5211，MG0751+2716，MGJ1654+1346，PG 1115+080，Q ER 0047-2808，RXJ1131-1231，以及WFI J2033-4723）属于至少包含五个星系的小组，还有一个（B0712+472）属于另一个视觉识别的小组候选。 有一些与透镜无关的小组仍然可能影响透镜模型；在25个（排除超小组）区域中的六个（24%）区域中，至少有一个大质量（$\sigma_{grp} \ge$500 km$^{-1}$）小组或小组候选投影在透镜的2$^{\prime}$范围内。 显示英文摘要

摘要： With a large, unique spectroscopic survey in the fields of 28 galaxy-scale strong gravitational lenses, we identify groups of galaxies in the 26 adequately-sampled fields. Using a group finding algorithm, we find 210 groups with at least five member galaxies; the median number of members is eight. Our sample spans redshifts of 0.04 $\le z_{grp} \le$ 0.76 with a median of 0.31, including 174 groups with $0.1 < z_{grp} < 0.6$. Groups have radial velocity dispersions of 60 $\le \sigma_{grp} \le$ 1200 km s$^{-1}$ with a median of 350 km s$^{-1}$. We also discover a supergroup in field B0712+472 at $z =$ 0.29 consisting of three main groups. We recover groups similar to $\sim$ 85% of those previously reported in these fields within our redshift range of sensitivity and find 187 new groups with at least five members. The properties of our group catalog, specifically 1) the distribution of $\sigma_{grp}$, 2) the fraction of all sample galaxies that are group members, and 3) the fraction of groups with significant substructure, are consistent with those for other catalogs. The distribution of group virial masses agrees well with theoretical expectations. Of the lens galaxies, 12 of 26 (46%) (B1422+231, B1600+434, B2114+022, FBQS J0951+2635, HE0435-1223, HST J14113+5211, MG0751+2716, MGJ1654+1346, PG 1115+080, Q ER 0047-2808, RXJ1131-1231, and WFI J2033-4723) are members of groups with at least five galaxies, and one more (B0712+472) belongs to an additional, visually identified group candidate. There are groups not associated with the lens that still are likely to affect the lens model; in six of 25 (24%) fields (excluding the supergroup), there is at least one massive ($\sigma_{grp} \ge$ 500 km s$^{-1}$) group or group candidate projected within 2$^{\prime}$ of the lens.