QSO candidates

This table contains parameters derived from various modules dedicated to the classification and characterisation of sources considered as QSO candidates. Together with those, the QSOs used to define the Gaia-CRF3 are also listed in this table. This table has been constructed with the intention to be complete rather than pure and, as such, it will contain a large fraction of non-genuine extragalactic sources. Purer samples can be drawn using dedicated flags or queries. Please refer to Chapter cu3qso of the on-line documentation for details about how this table was built, its content, and for recommendations regarding its exploitation.

Known issues

The surface brightness sample published in the qso_candidates is based on an input list of sources described in Section 9.2 of the on-line documentation. This list was built based on external catalogues and the table qso_catalogue_name provides the names of the applicable catalogues for each of the sources featuring surface brightness parameters in qso_candidates. Due to an oversight during the processing, the catalogue name is missing for 494 sources. In this file, the list of affected sourceIds is provided.

本表格包含来自多个模块的参数，这些模块用于对被视为类星体（Quasi-Stellar Object，QSO）候选体的天体进行分类与表征。此外，用于定义Gaia-CRF3的类星体也一并列入本表格中。本表格的构建初衷是追求完整性而非纯粹性，因此其中包含大量非真实的河外天体。可通过专用标记或查询语句从中筛选出纯度更高的样本。请参阅在线文档中的cu3qso章节，以了解本表格的构建方式、内容构成以及数据使用相关建议。

已知问题
qso_candidates中发布的面亮度样本基于在线文档9.2节中描述的源输入列表。该列表依托外部星表构建，qso_catalogue_name表格可为qso_candidates中所有带有面亮度参数的源提供对应适用星表的名称。由于处理过程中的疏漏，共有494个源缺失了对应的星表名称。本文件中提供了受影响的sourceId列表。

搜集汇总

背景与挑战

背景概述

该数据集是Gaia DR3发布的一部分，专门收录了类星体候选源。它包含超过660万个天体的分类、变异性、红移和形态学等41个参数，旨在提供完整的候选样本，但其中混杂了非河外源，用户可通过特定标志或查询获取更纯净的子集。