Abstract

Homogeneous and complete samples of brown dwarfs are needed for various kinds of studies: kinematic studies of the Galaxy, studies of binary stars with brown dwarfs, refinement of the low-mass end of the initial mass function, etc. According to various estimates, brown dwarfs can make up to 25% of the population of the Galaxy; however, the discovery of brown dwarfs with spectroscopic methods is extremely labor-intensive. In this paper, we present the cross-identification of the known nearest brown dwarfs from the 2021 list with the DES optical survey and the creation of photometric rules based on the detection of brown dwarfs in three surveys: WISE, 2MASS, and DES. Moreover, we present different photometric rules for each of the three families of brown dwarfs: bright, transit, and faint. No such division has been made yet.

中文翻译：

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在大型光度测量中寻找棕矮星：WISE、2MASS 和 DES

摘要

各种研究都需要均匀且完整的褐矮星样本：银河系的运动学研究、褐矮星双星的研究、初始质量函数低质量端的细化等。根据各种估计，褐矮星矮星最多可占银河系人口的 25%；然而，用光谱方法发现褐矮星是极其耗费人力的。在本文中，我们介绍了 2021 年列表中已知最近的棕矮星与 DES 光学巡天的交叉识别，以及基于三项巡天（WISE、2MASS 和 DES）中褐矮星检测的光度规则的创建。此外，我们还为褐矮星的三个家族中的每一个提出了不同的光度规则：亮星、凌日星和微弱星。目前还没有进行这样的划分。