Wall Structure with 6dF, a Multifiber spectrograph of UK Schmidt Telescope

英澳天文台已于2001年6月开始使用英国施密特望远镜附带的多光纤光谱仪6DF进行星系探测。Wakamatsu是国际科学团队的一员，他主要从事沿银河系平面的红移调查。与SDSS和2DF调查相反，这次光谱调查的目标是基于2MASS的两微米全天调查，我们在K波段选择了超过13万个亮度大于13 MAG的星系。通过测量它们的红移，我们揭示了距离Cz&lt；30,000公里/秒范围内的局域大尺度结构。初步结果如下：1)我们通过获得星系的三维分布研究了局域宇宙的质量密度。2)我们成功地测量了许多隐藏星系的退缩速度，这些速度在K波段清晰可见。3)我们获得了足够好的光谱，利用Dn-sigma关系估计星系团的整体运动。4)我们首次发布了数据，并希望对其进行分析，以用于偏差参数和宇宙常数的研究。

Anglo-Australian Observatory has started galaxy survey in June 2001 with 6dF, a multi-fiber spectrograph attached to the UK Schmidt telescope. Wakamatsu, a member of international science team, worked mostly for the redshift survey along the Galactic plane.Targets of this spectroscopic survey are, contrary to SDSS and 2dF surveys, based on 2MASS, the two-micron all sky survey, and we selected more than 130,000 galaxies which are brighter than 13 mag in K band. Measuring their redshifts, we discloses the Local Large-Scale Structure within the distance cz < 30,000 km/s.The preliminary results are as follows :1) We studied the mass density of the Local Universe by obtaining 3-dimensional distribution of galaxies.2) Along the Galactic plane, we succeeded in measuring recession velocities of many hidden galaxies which are clearly seen in the K-band.3) We obtained spectra good enough to estimate bulk motions of clusters by apply Dn-sigma relation.4) We have made the first data release, and would like analyze them for studies of the bias parameter and the cosmological constant.