GLIMPSE 3D Catalog

GLIMPSE3D is the third in a series of large area projects to map selected regions of the Galactic plane using the Spitzer Space Telescope Infrared Array Camera (IRAC). GLIMPSEI1 covered the Galactic plane from |l| = 10◦ to 65◦ and |b| < 1◦; GLIMPSEII filled in the inner 20 degrees of the Galactic plane, |l| < 10◦, with vertical extensions up to ±1.5◦ for |l| =5◦to 2◦, and up to ±2◦ from |l| =2◦to 0◦. GLIMPSE3D adds vertical extensions, generally up to |b| < 3◦, but up to |b| < 4.2◦ in the center of the Galaxy. The goal of this coverage is to provide data to study the vertical stellar and interstellar The GLIMPSE3D Archive (GLM3DA or the “Archive”) consists of point sources with a signal- to-noise > 5 in at least one band and less stringent selection critera than the Catalog. The photometric uncertainty is typically < 0.3 mag. The GLIMPSE3D Catalog is a subset of the Archive, but note that the entries for a particular source might not be the same due to additional nulling of magnitudes in the Catalog because of the more stringent requirements. This dataset or service is made available by the Infrared Science Archive (IRSA) at IPAC, which is operated by the California Institute of Technology under contract with the National Aeronautics and Space Administration.

GLIMPSE3D是利用斯皮策空间望远镜（Spitzer Space Telescope）红外阵列相机（Infrared Array Camera, IRAC）绘制银河平面选定区域的大型区域项目系列的第三项。GLIMPSE一期覆盖了银经|l|为10°至65°、银纬|b|<1°的银河平面区域；GLIMPSE二期填补了银河平面内侧20°（|l|<10°）的空白，其中银经2°至5°区间的垂直延伸范围可达±1.5°，银经0°至2°区间则可达±2°。GLIMPSE3D新增了垂直覆盖延伸范围，通常覆盖|b|<3°的区域，在银河核心区域则可达|b|<4.2°。本次覆盖的目标是提供相关数据，以开展恒星与星际介质的垂直分布相关研究。

GLIMPSE3D存档库（GLM3DA，简称"存档库"）包含至少一个波段信噪比大于5的点源，其筛选标准相较于GLIMPSE3D星表更为宽松。该存档库的测光不确定度通常小于0.3星等。GLIMPSE3D星表是存档库的子集，但需注意：由于星表采用了更为严格的筛选要求，会额外剔除部分星等数据，因此同一源在星表与存档库中的条目可能存在差异。

本数据集或服务由IPAC下属的红外科学存档库（Infrared Science Archive, IRSA）提供，IPAC由加州理工学院根据与美国国家航空航天局（National Aeronautics and Space Administration）的合同进行运营。

搜集汇总

背景与挑战

背景概述

GLIMPSE 3D Catalog是斯皮策太空望远镜IRAC项目的第三个大型数据集，专注于扩展银河系平面的垂直覆盖（通常达|b| < 3°，中心区域达|b| < 4.2°），旨在研究垂直恒星和星际结构。该数据集包含信噪比>5的点源，光度不确定性通常<0.3星等，并分为存档和更严格选择的目录子集，于2020年发布。