The second epoch Molonglo Galactic Plane Survey: compact source catalogue
The second epoch Molonglo Galactic Plane Survey: compact source catalogue
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DOI：
10.1111/j.1365-2966.2007.12379.x
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发表时间：
2007-08
影响因子：
4.8
通讯作者：
T. Murphy;T. Mauch;T. Mauch;A. Green;R. Hunstead;B. Piestrzynska;A. P. Kels;A. P. Kels;P. Sztajer
中科院分区：
文献类型：
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作者：
T. Murphy;T. Mauch;T. Mauch;A. Green;R. Hunstead;B. Piestrzynska;A. P. Kels;A. P. Kels;P. Sztajer
我们介绍了第二次莫龙格罗银河系平面调查(MGPS-2)的第一次数据发布。MGPS-2是利用莫隆格罗天文台合成望远镜以843 MHz的频率和45×45 arcsec2的恢复波束进行的，是对银河系南部平面进行的最高分辨率的大规模射电测量。它覆盖范围|b|10°)。在本文中，我们介绍了MGPS-2紧凑源星表。该星表有48850个高于10mJy束流−1的极限峰值亮度的源。星表中的位置精确到1-2角秒。包括扩展来源在内的完整目录正在编制中。我们已经对银河系平面上的致密源密度进行了分析，发现源密度在统计上并不高于仅从河外源密度所预期的密度。我们还介绍了SUMSS图像数据和目录的2.0版，现在可以在网上获得。数据由6294.3°×4.3°马赛克图像组成，覆盖8100°天空，δ≤−为30°，|b|>；为10°。该目录包含210412个射电源，其极限峰值亮度分别为6mJy束−1(δ≤−50°)和10mJy束−1(δ>；−50°)。我们描述了对SUMSS编目过程的更新和改进。
We present the first data release from the second epoch Molonglo Galactic Plane Survey (MGPS-2). MGPS-2 was carried out with the Molonglo Observatory Synthesis Telescope at a frequency of 843 MHz and with a restoring beam of 45 × 45 arcsec2, making it the highest resolution large-scale radio survey of the southern Galactic plane. It covers the range |b| 10°). In this paper, we present the MGPS-2 compact source catalogue. The catalogue has 48 850 sources above a limiting peak brightness of 10 mJy beam−1. Positions in the catalogue are accurate to 1–2 arcsec. A full catalogue including extended sources is in preparation. We have carried out an analysis of the compact source density across the Galactic plane and find that the source density is not statistically higher than the density expected from the extragalactic source density alone. We also present version 2.0 of the SUMSS image data and catalogue which is now available online. The data consist of 629 4.3° × 4.3° mosaic images covering the 8100 deg2 of sky with δ ≤ −30° and |b| > 10°. The catalogue contains 210 412 radio sources to a limiting peak brightness of 6 mJy beam−1 at δ ≤ −50° and 10 mJy beam−1 at δ > −50°. We describe the updates and improvements made to the SUMSS cataloguing process.