Exploring the age dependent properties of M and L dwarfs using Gaia and SDSS: The Sample

Sample from "Exploring the age dependent properties of M and L dwarfs using Gaia and SDSS". We present a sample of 74,216 M and L dwarfs constructed from two existing catalogs of cool dwarfs spectroscopically identified in the Sloan Digital Sky Survey (SDSS). We cross-matched the SDSS catalog with Gaia DR2 to obtain parallaxes and proper motions and modified the quality cuts suggested by the Gaia Collaboration to make them suitable for late-M and L dwarfs.

本数据集源自《利用盖亚（Gaia）与斯隆数字巡天（Sloan Digital Sky Survey，SDSS）探究M型与L型矮星的年龄依赖特性》。本研究构建了包含74216颗M型与L型矮星的样本，该样本源自斯隆数字巡天中已有的两类经光谱证认的冷矮星星表。我们将斯隆数字巡天星表与盖亚第二数据发布版（Gaia DR2）进行交叉证认，以获取视差与自行数据，并对盖亚合作团队提出的质量筛选标准进行修正，使其适配晚型M型与L型矮星的研究需求。