标题： 来自LAMOST光谱巡天和Sloan数字巡天的星系对样本 显示英文标题

标题： A sample of galaxy pairs identified from the LAMOST spectral survey and the Sloan Digital Sky Survey

摘要： 由于光纤碰撞效应，一小部分（$<10\%$）斯隆数字巡天（SDSS）主样本星系（MGs）没有被安排光谱观测。这些星系已被编入LAMOST星系外巡天的输入星表，并被称为互补星系样本。本文介绍了LAMOST光谱巡天前两年（截至2014年9月）互补星系光谱观测项目及其现状。此外，我们从LAMOST互补星系和SDSS主样本星系中识别出一个包含1,102个星系对的样本，定义为两个成员的投影距离小于100 kpc且退行速度差小于500$\rm kms^{-1}$的星系对。与仅基于SDSS选择的星系对相比，LAMOST-SDSS星系对不受大分离距离的偏倚影响，因此是对星系相互作用和星系合并统计研究的一个有用的补充。 显示英文摘要

摘要： A small fraction($<10\%$) of SDSS main sample galaxies(MGs) have not been targeted with spectroscopy due to the the fiber collision effect. These galaxies have been compiled into the input catalog of the LAMOST extra-galactic survey and named as the complementary galaxy sample. In this paper, we introduce the project and the status of the spectroscopies of the complementary galaxies in the first two years of the LAMOST spectral survey(till Sep. of 2014). Moreover, we present a sample of 1,102 galaxy pairs identified from the LAMOST complementary galaxies and SDSS MGs, which are defined as that the two members have a projected distance smaller than 100 kpc and the recessional velocity difference smaller than 500 $\rm kms^{-1}$. Compared with the SDSS only selected galaxy pairs, the LAMOST-SDSS pairs take the advantages of not being biased toward large separations and therefor play as a useful supplement to the statistical studies of galaxy interaction and galaxy merging.