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赫歇尔参考巡天

The Herschel Reference Survey

A. Boselli, S. Eales, L. Cortese, G. Bendo, P. Chanial, V. Buat, J. Davies, R. Auld, E. Rigby, M. Baes, M. Barlow, J. Bock, M. Bradford, N. Castro-Rodriguez, S.… 展开作者

A. Boselli, S. Eales, L. Cortese, G. Bendo, P. Chanial, V. Buat, J. Davies, R. Auld, E. Rigby, M. Baes, M. Barlow, J. Bock, M. Bradford, N. Castro-Rodriguez, S. Charlot, D. Clements, D. Cormier, E. Dwek, D. Elbaz, M. Galametz, F. Galliano, W. Gear, J. Glenn, H. Gomez, M. Griffin, S. Hony, K. Isaak, L. Levenson, N. Lu, S. Madden, B. O'Halloran, K. Okumura, S. Oliver, M. Page, P. Panuzzo, A. Papageorgiou, T. Parkin, I. Perez-Fournon, M. Pohlen, N. Rangwala, H. Roussel, A. Rykala, N. Sacchi, M. Sauvage, B. Schulz, M. Schirm, M. W. L. Smith, L. Spinoglio, J. Stevens, M. Symeonidis, M. Vaccari, L. Vigroux, C. Wilson, H. Wozniak, G. Wright, W. Zeilinger

摘要:

Herschel参考巡天是一个保证时间的Herschel关键项目,将成为对附近宇宙尘埃的基准研究。该调查将补充其他一些赫歇尔的关键项目,包括大型宇宙学调查,追踪遥远宇宙中的尘埃。我们将使用赫歇尔来产生一个250,350和500微米的323个星系的完整样本的图像。样本是体积有限的,包含源的距离在15和25百万秒差距和通量限制在K波段,以尽量减少与尘埃和年轻的大质量恒星的选择效应,并引入恒星质量的选择。样本涵盖了形态类型(椭圆星系到晚型螺旋星系)和环境(从磁场到室女星系团中心)的整个范围,因此将有助于我们自己以外的其他目的。我们计划利用这次巡天调查(一)星系的尘埃含量作为哈勃类型、恒星质量和环境的函数,(二)尘埃含量和成分与星际介质的其他阶段之间的联系,以及(三)星系中尘埃的起源和演变。在本文中,我们描述了调查的目标,样本的细节和一些辅助观测计划,我们已经开始收集补充数据。我们还使用现有的多频数据进行样本的统计特性的分析。

英文摘要:

The Herschel Reference Survey is a guaranteed time Herschel key project and will be a benchmark study of dust in the nearby universe. The survey will complement a number of other Herschel key projects including large cosmological surveys that trace dust in the distant universe. We will use Herschel to produce images of a statistically-complete sample of 323 galaxies at 250, 350 and 500 micron. The sample is volume-limited, containing sources with distances between 15 and 25 Mpc and flux limits in the K-band to minimize the selection effects associated with dust and with young high-mass stars and to introduce a selection in stellar mass. The sample spans the whole range of morphological types (ellipticals to late-type spirals) and environments (from the field to the centre of the Virgo Cluster) and as such will be useful for other purposes than our own. We plan to use the survey to investigate (i) the dust content of galaxies as a function of Hubble type, stellar mass and environment, (ii) the connection between the dust content and composition and the other phases of the interstellar medium and (iii) the origin and evolution of dust in galaxies. In this paper, we describe the goals of the survey, the details of the sample and some of the auxiliary observing programs that we have started to collect complementary data. We also use the available multi-frequency data to carry out an analysis of the statistical properties of the sample.

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