The Millennium Galaxy Catalogue: 16 ⩽ BMGC < 24 galaxy counts and the calibration of the local galaxy luminosity function
The Millennium Galaxy Catalogue: 16 ⩽ BMGC < 24 galaxy counts and the calibration of the local galaxy luminosity function
复制标题
千年星系表：16⩽BMGC<24个星系计数及局部星系光度函数的校准
DOI：
--
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
W. Couch
中科院分区：
文献类型：
--
作者：
J. Liske;D. Lemon;S. Driver;N. Cross;W. Couch
千年星系表（MGC）是一个37.5度2，中等深度，B波段成像调查沿着天球赤道，采取了广泛的领域相机的艾萨克牛顿望远镜。该调查区域包含在两度场星系红移调查（2dFGRS）和斯隆数字巡天早期数据发布（SDSS-EDR）的区域内。该巡天具有26 mag arcsec - 2的均匀等照度探测极限，它提供了一个强大的，定义良好的恒星和星系的目录范围在16 ≤ B M G C < 24 ma。在这里，我们描述的调查策略，测光和天体测量校准，源检测和分析，并提出在一个单一的调查中连接明亮和暗淡的星系种群的星系数计数。我们认为，这些计数代表了最先进的技术，并使用它们来约束一些最近估计的本地星系光度函数的归一化（Φ*）。我们发现，2dFGRS、SDSS调试数据（CD）、ESO切片项目、世纪巡天、达勒姆/UKST、斯特罗姆洛山/APM、SSRS 2和NOG光度函数需要对其公布的Φ* 值进行1.05 ′ 0.05、0.76 ′ 0.10、1.02 ′ 0.22、1.02 ′ 0.16、1.16 ′ 0.28、分别为1.75 ′ 0.37、1.40 ′ 0.26和1.01 ′ 0.39。对星系光度函数进行重整化后，我们得到平均局部B J光度密度为j B J =（1.986 ′ 0.031）× 10 8 h L O . Mpc - 3 1 .
The Millennium Galaxy Catalogue (MGC) is a 37.5 deg 2 , medium-deep, B-band imaging survey along the celestial equator, taken with the Wide Field Camera on the Isaac Newton Telescope. The survey region is contained within the regions of both the Two Degree Field Galaxy Redshift Survey (2dFGRS) and the Sloan Digital Sky Survey Early Data Release (SDSS-EDR). The survey has a uniform isophotal detection limit of 26 mag arcsec - 2 and it provides a robust, well-defined catalogue of stars and galaxies in the range 16 ≤ B M G C < 24 mag. Here we describe the survey strategy, the photometric and astrometric calibration, source detection and analysis, and present the galaxy number counts that connect the bright and faint galaxy populations within a single survey. We argue that these counts represent the state of the art and use them to constrain the normalizations (Φ*) of a number of recent estimates of the local galaxy luminosity function. We find that the 2dFGRS, SDSS Commissioning Data (CD), ESO Slice Project, Century Survey, Durham/UKST, Mt Stromlo/APM, SSRS2 and NOG luminosity functions require a revision of their published Φ* values by factors of 1.05 ′ 0.05, 0.76 ′ 0.10, 1.02 ′ 0.22, 1.02 ′ 0.16, 1.16 ′ 0.28, 1.75 ′ 0.37, 1.40 ′ 0.26 and 1.01 ′ 0.39, respectively. After renormalizing the galaxy luminosity functions we find a mean local b J luminosity density of j b J = (1.986 ′ 0.031) x 10 8 h L O . Mpc - 3 . 1 .