Low resolution spectrograph for 4MOST

汉堡大学目前正在牵头开展一项新的天文调查，旨在揭示“暗物质”的性质：波是对星系的光谱调查，它将覆盖约200万个天体，并测量约10万组星系的质量。有了这些数据，我们将能够约束仍然未知的暗物质粒子的质量和自作用截面，并观察星系在70亿年的时间尺度上的演化。海浪观测将使用一种名为4MOST的新仪器进行。欧洲南方天文台(ESO)已经与4MOST联盟签订了合同，为其在智利的4米Vista望远镜建造这台仪器。汉堡大学是该联盟的成员，该联盟由15个欧洲和澳大利亚机构组成，WAVES是ESO和该协会目前正在联合计划的为期5年的综合4MOST调查计划的重要组成部分。但是，为了确保4MOST确实能够提供WAVE所需的数据，它将需要配备两台低分辨率光谱仪，而不是目前计划的只配备一台这样的光谱仪。本提案的目的是为第二台光谱仪争取资金。

Hamburg University is currently leading the development of a new astronomical survey aimed at revealing the properties of "Dark Matter": WAVES is a spectroscopic survey of galaxies, that will cover ~2 million objects and measure the masses of ~100,000 groups of galaxies. With these data we will be able to constrain the mass and the self-interaction cross-section of the still unknown Dark Matter particle, and observe the evolution of galaxies over a time-scale of 7 billion years. The WAVES observations will be carried out with a new instrument called 4MOST. The European Southern Observatory (ESO) has contracted the 4MOST Consortium to build this instrument for its 4-m VISTA telescope in Chile. Hamburg University is a member of this Consortium, which is comprised of 15 European and Australian institutions, and WAVES is an important component of the comprehensive, 5-year 4MOST survey programme currently being planned jointly by ESO and the Consortium.However, to ensure that 4MOST will indeed be able to deliver the data required by WAVES, it will need to be equipped with two low-resolution spectrographs, instead of just one such spectrograph as currently planned. The present proposal aims at securing the funding for the second spectrograph.