论文标题
闪光4-JY（G4JY）样品：II。单个来源的宿主 - 半鉴定
The GLEAM 4-Jy (G4Jy) Sample: II. Host-galaxy identification for individual sources
论文作者
论文摘要
使用Murchison Widefield Array（MWA）观察到了整个南部天空（偏斜，$Δ<$ 30度），该阵列（MWA）提供了$ \ sim $ 2-arcmin分辨率的无线电成像，以低频（72-231 MHz）。 This is the GaLactic and Extragalactic All-sky MWA (GLEAM) Survey, and we have previously used a combination of visual inspection, cross-checks against the literature, and internal matching to identify the 'brightest' radio-sources ($S_{\mathrm{151MHz}} >$ 4 Jy) in the extragalactic catalogue (Galactic latitude, $|b| >$ 10 deg).我们将这1,863个来源称为GLEAM 4-JY（G4JY）样本，并使用无线电图像（$ \ leq $ 45-ARCSEC分辨率）和多波长信息，以评估其形态并识别其托管无线电发射的星系（在适当的情况下）。有关如何访问此工作的所有覆盖层的详细信息，请访问https://github.com/svw26/g4jy。除此之外，我们还对文献进行了进一步的检查，我们在本文中为单个来源进行了记录。尽管绝大多数G4JY样品都是带有强大的放射喷射的活性银河核，但我们强调，它还包含一个星云，附近有两个，恒星形成星系，一个群集遗物和簇光环。还有三个扩展来源，我们无法推断出导致低频排放的机制。在G4JY目录中，我们为86％的来源提供了中红外的识别，并将其命名为：具有不确定的识别（129个来源），具有微弱/未表征的中红外主机（126个来源），或者是不适合指定主机（2个来源）的。对于129个来源的子集，关于候选宿主 - 加拉克斯人有歧义，其中包括四个来源（B0424 $ - $ 728，B0703 $ -451、3C 198和3C 403.1），我们质疑现有的身份证明。
The entire southern sky (Declination, $δ<$ 30 deg) has been observed using the Murchison Widefield Array (MWA), which provides radio imaging of $\sim$2-arcmin resolution at low frequencies (72-231 MHz). This is the GaLactic and Extragalactic All-sky MWA (GLEAM) Survey, and we have previously used a combination of visual inspection, cross-checks against the literature, and internal matching to identify the 'brightest' radio-sources ($S_{\mathrm{151MHz}} >$ 4 Jy) in the extragalactic catalogue (Galactic latitude, $|b| >$ 10 deg). We refer to these 1,863 sources as the GLEAM 4-Jy (G4Jy) Sample, and use radio images (of $\leq$ 45-arcsec resolution), and multi-wavelength information, to assess their morphology and identify the galaxy that is hosting the radio emission (where appropriate). Details of how to access all of the overlays used for this work are available at https://github.com/svw26/G4Jy. Alongside this we conduct further checks against the literature, which we document in this paper for individual sources. Whilst the vast majority of the G4Jy Sample are active galactic nuclei with powerful radio-jets, we highlight that it also contains a nebula, two nearby, star-forming galaxies, a cluster relic, and a cluster halo. There are also three extended sources for which we are unable to infer the mechanism that gives rise to the low-frequency emission. In the G4Jy catalogue we provide mid-infrared identifications for 86% of the sources, and flag the remainder as: having an uncertain identification (129 sources), having a faint/uncharacterised mid-infrared host (126 sources), or it being inappropriate to specify a host (2 sources). For the subset of 129 sources, there is ambiguity concerning candidate host-galaxies, and this includes four sources (B0424$-$728, B0703$-$451, 3C 198, and 3C 403.1) where we question the existing identification.
