论文标题
小争吵：Gaia EDR3和SDSS的首次发行具有异常天体特征的奇怪的Quasar候选者
SQUAB I: The first release of Strange QUasar candidates with ABnormal astrometric characteristics from Gaia EDR3 and SDSS
论文作者
论文摘要
鉴于它们的距离非常大且较小的表观尺寸，类星体通常被视为具有接近零视差和适当运动的对象。但是，一些特殊的类星体可能具有异常的天体特征，例如类星体对，镜头类星体，带有明亮的parsec尺度光学喷气机的AGN，它们是科学有趣的物体，例如二进制黑洞。这些类星体可能带有可通过Gaia数据检测到的天文抖动，或者在不同波长下位置的显着变化。在这项工作中，我们的目标是从Gaia EDR3星体数据与斯隆数字天空调查（SDSS）光谱数据相结合的这些Quasar候选者，以向科学界提供候选目录。我们提出了一系列基于GAIA星形数据选择异常类星体的标准。我们分别获得了两个包含155个来源和44个来源的目录。它们是类星体对的潜在候选者。
Given their extremely large distances and small apparent sizes, quasars are generally considered as objects with near-zero parallax and proper motion. However, some special quasars may have abnormal astrometric characteristics, such as quasar pairs, lensed quasars, AGNs with bright parsec-scale optical jets, which are scientifically interesting objects, such as binary black holes. These quasars may come with astrometric jitter detectable with Gaia data, or significant changes in the position at different wavelengths. In this work, we aim to find these quasar candidates from Gaia EDR3 astrometric data combining with Sloan Digital Sky Survey (SDSS) spectroscopic data to provide a candidate catalog to the science community. We propose a series of criteria for selecting abnormal quasars based on Gaia astrometric data. We obtain two catalogs containing 155 sources and 44 sources, respectively. They are potential candidates of quasar pairs.
