文章基本信息

标题：A 1420 MHz Catalog of Compact Sources in the Northern Galactic Plane
本地全文：下载
作者：A. R. Taylor ; D. A. Leahy ; W. W. Tian 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2017
卷号：153
期号：3
DOI：10.3847/1538-3881/153/3/113
语种：English
出版社：American Institute of Physics
摘要：We present a catalog of compact sources of radio emission at 1420 MHz in the northern Galactic plane from the Canadian Galactic Plane Survey. The catalog contains 72,758 compact sources with an angular size less than 3' within the Galactic longitude range 52° < ℓ < 192° down to a 5σ detection level of ~1.2 mJy. Linear polarization properties are included for 12,368 sources with signals greater than 4σ QU in the Canadian Galactic Plane Survey (CGPS) Stokes Q and U images at the position of the total intensity peak. We compare CGPS flux densities with cataloged flux densities in the Northern VLA Sky Survey catalog for 10,897 isolated unresolved sources with CGPS flux density greater than 4 mJy to search for sources that show variable flux density on timescales of several years. We identify 146 candidate variables that exhibit high fractional variations between the two surveys. In addition, we identify 13 candidate transient sources that have CGPS flux density above 10 mJy but are not detected in the Northern VLA Sky Survey.
关键词：catalogs;radio continuum: general;surveys Supporting material: machine-readable tables