标题： MUSE哈勃超深场巡天：I. 巡天描述，数据减少和源检测 显示英文标题

标题： The MUSE Hubble Ultra Deep Field Survey: I. Survey description, data reduction and source detection

摘要： 我们介绍了MUSE哈勃超深场调查，这是一个由九个MUSE区域组成的马赛克，覆盖了整个HUDF区域的90%，具有10小时的深度曝光时间，以及在一个1.15平方角分的区域中更深度的31小时曝光。 改进的观测策略和先进的数据减少结果使数据立方体具有亚角秒的空间分辨率（7000 A处为0.65角秒）和精确的天体测量（0.07角秒均方根）。 我们将数据立方体的宽带光度特性与HST光度进行了比较，发现零点在mAB=28以内有良好的一致性，但对于暗弱天体则存在逐渐增大的离散性。 我们研究了噪声特性，并开发了一种经验方法来考虑由3D drizzle插值引入的相关性的影响。 对于点源，单个超深数据立方体的3 sigma发射线检测极限为1.5和3.1 10-19 erg.s-1.cm-2，分别对应于单个超深数据立方体和马赛克。 我们使用了一个最优提取方案，将已发布的HST源位置作为先验条件，提取了6288个源。 同时，我们使用一种基于先进检验统计和滤波匹配的原始方法对发射线星系进行了盲搜。 盲搜结果在马赛克中得到了1251个发射线星系候选者，在超深数据立方体中得到了306个，其中包括72个没有HST对应物的源（mAB>31）。 此外，还识别出了88个在HST目录中被遗漏但具有清晰HST对应物的源。 这个数据集是有史以来最深的光谱调查。 仅用了超过100小时的积分时间，它提供的光谱红移数量比过去十年在UDF上积累的数据多一个数量级。 这些数据立方体的深度和高质量使得可以在大红移范围内对星系群体及其环境的物理特性进行新的和详细的研究所。 显示英文摘要

摘要： We present the MUSE Hubble Ultra Deep Survey, a mosaic of nine MUSE fields covering 90\% of the entire HUDF region with a 10-hour deep exposure time, plus a deeper 31-hour exposure in a single 1.15 arcmin2 field. The improved observing strategy and advanced data reduction results in datacubes with sub-arcsecond spatial resolution (0.65 arcsec at 7000 A) and accurate astrometry (0.07 arcsec rms). We compare the broadband photometric properties of the datacubes to HST photometry, finding a good agreement in zeropoint up to mAB=28 but with an increasing scatter for faint objects. We have investigated the noise properties and developed an empirical way to account for the impact of the correlation introduced by the 3D drizzle interpolation. The achieved 3 sigma emission line detection limit for a point source is 1.5 and 3.1 10-19 erg.s-1.cm-2 for the single ultra-deep datacube and the mosaic, respectively. We extracted 6288 sources using an optimal extraction scheme that takes the published HST source locations as prior. In parallel, we performed a blind search of emission line galaxies using an original method based on advanced test statistics and filter matching. The blind search results in 1251 emission line galaxy candidates in the mosaic and 306 in the ultradeep datacube, including 72 sources without HST counterparts (mAB>31). In addition 88 sources missed in the HST catalog but with clear HST counterparts were identified. This data set is the deepest spectroscopic survey ever performed. In just over 100 hours of integration time, it provides nearly an order of magnitude more spectroscopic redshifts compared to the data that has been accumulated on the UDF over the past decade. The depth and high quality of these datacubes enables new and detailed studies of the physical properties of the galaxy population and their environments over a large redshift range.