论文标题
与32,616个射电星系的视觉形态分类的目录和光主机的目录
Catalogue with visual morphological classification of 32,616 radio galaxies with optical hosts
论文作者
论文摘要
我们介绍了与光学星系相关的无线电来源目录，并且具有未解决或扩展的形态I（Rogue I）。它是由Sloan Digital Sky Survey Data Release 7（SDSS DR 7）的交叉匹配星系以及来自二十厘米（第一）和国家射电天文天文台VLA天空调查（NVSS）目录中的第一批无线电天空图像的无线电来源产生的。我们创建了视觉分类的无线电对象的最大手工目录，并与它们相关联，它们包含32,616个星系，其第一芯在光学位置的3个ARCSEC中。所有列出的对象都具有高质量的SDSS DR 7光谱，具有信噪比$> $> $ 10，光谱红移最高$ z = 0.6 $。无线电形态分类是通过对第一个和NVSS轮廓图覆盖在DSS图像上的，而光学形态分类基于SDSS DR 7的120个ARCSEC快照图像进行的。 流氓I（即$ \ sim $ 93％）中的大多数宽宽星系都无法解决（紧凑或伸长），而其余的人则表现出扩展的形态，例如Fanaroff-Riley（I型，II，II，II，II和混合，宽尾巴，狭窄的尾巴，尾巴，尾巴又有型号，I. X形，Z形。大多数FRIS的无线电亮度低，与FR IS的亮度相当。此外，由于对所有无线电图和光学图像的视觉检查，我们能够发现或重新分类许多无线电对象，为巨型，双双，X形和Z形射线星系。提出的样本可以用作训练光学和射电星系识别和分类的自动方法的数据库。
We present the catalogue of Radio sources associated with Optical Galaxies and having Unresolved or Extended morphologies I (ROGUE I). It was generated by cross-matching galaxies from the Sloan Digital Sky Survey Data Release 7 (SDSS DR 7) as well as radio sources from the First Images of Radio Sky at Twenty Centimetre (FIRST) and the National Radio Astronomical Observatory VLA Sky Survey (NVSS) catalogues. We created the largest handmade catalogue of visually classified radio objects and associated with them optical host galaxies, containing 32,616 galaxies with a FIRST core within 3 arcsec of the optical position. All listed objects possess the good quality SDSS DR 7 spectra with the signal-to-noise ratio $>$10 and spectroscopic redshifts up to $z=0.6$. The radio morphology classification was performed by a visual examination of the FIRST and the NVSS contour maps overlaid on a DSS image, while an optical morphology classification was based on the 120 arcsec snapshot images from SDSS DR 7. The majority of radio galaxies in ROGUE I, i.e. $\sim$ 93%, are unresolved (compact or elongated), while the rest of them exhibit extended morphologies, such as Fanaroff-Riley (FR) type I, II, and hybrid, wide-angle tail, narrow-angle tail, head-tail sources, and sources with intermittent or reoriented jet activity, i.e. double-double, X-shaped, and Z-shaped. Most of FR IIs have low radio luminosities, comparable to the luminosities of FR Is. Moreover, due to visual check of all radio maps and optical images, we were able to discover or reclassify a number of radio objects as giant, double-double, X-shaped, and Z-shaped radio galaxies. The presented sample can serve as a database for training automatic methods of identification and classification of optical and radio galaxies.
