SCUBA半度规模外银河星系调查(SHADES)——I.调查动机、设计与数据处理
摘要
SCUBA半度规模外银河星系调查(SHADES)是正在进行的位于James Clerk Maxwell望远镜上的大型空场亚毫米星系调查。SHADES旨在将450+850微米的半平方度范围内调查至4倍深度约为8mJy于850微米处。正在观测两个场地，分别是Subaru/XMM--Newton深场(SXDF)和Lockman洞东侧。该调查有3个主要目标：i)探索巨大的尘埃包裹的星际形成活动的宇宙历史，ii)研究亚毫米选取星系的聚类特性，以确定这些天体是否可能是今天巨型椭圆星系的祖先，iii)探讨亚毫米选取源中恒星形成AGN的比例。为实现这些目标，需要将亚毫米数据与射电至X射线频段的共位置信息相结合， resulting in a extensive multi-wavelength dataset providing complete photometric redshift information accurate to delta z <~0.5 and detailed SEDs for the vast majority of the sub-mm-selected sources. In this paper, the first of a series on SHADES, we present an overview of the motivation for the survey, describe the survey strategy and provide a detailed description of the primary data analysis pipeline. As of Feb. 2004, 720arcmin^2 had been mapped with SCUBA (about 40% of the anticipated final total) to a median 1sigma depth of 2.2mJy per beam at 850microns (25mJy per beam at 450microns), and a source density of 650+/-50 sources/deg^2 >3sigma at 850microns, uncorrected for Eddington bias. A refined re-analysis of the original 8-mJy survey Lockman hole data was carried out in order to evaluate the new data reduction pipeline. Of the 17 most secure sources in the original sample, 12 have been re-confirmed, including 10 of the 11 for which radio IDs were previously secured.(Abridged)
引用
@article{arxiv.astro-ph/0507612,
title = {The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- I. Survey motivation, design and data processing},
author = {A. M. J. Mortier and S. Serjeant and J. S. Dunlop and S. E. Scott and the SHADES consortium},
journal= {arXiv preprint arXiv:astro-ph/0507612},
year = {2008}
}
备注
20 pages including 10 figures and 5 tables. Accepted for publication in MNRAS