A limit on the number density of bright z ≈ 7 galaxies

被引：19
|
作者：
Stanway, Elizabeth R. [1 ]
Bremer, Malcolm N. [1 ]
Squitieri, Valentina [1 ]
Douglas, Laura S. [1 ,2 ]
Lehnert, Matthew D. [3 ]
机构：
[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
[2] Sch Phys, Exeter EX4 4QL, Devon, England
[3] Observ Paris, Lab Etudes Galaxies Etoilets Phys & Instrumentat, GEPI, Meudon, France
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2008年 / 386卷 / 01期
基金：
英国科学技术设施理事会;
关键词：
galaxies : evolution; galaxies : high-redshift; galaxies : starburst;
D O I：
10.1111/j.1365-2966.2008.13030.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a survey of bright optical dropout sources in two deep, multiwavelength surveys comprising 11 widely separated fields, aimed at constraining the galaxy luminosity function at z approximate to 7 for sources at 5-10 L* (z = 6). Our combined survey area is 225 arcmin(2) to a depth of J(AB) = 24.2 (3 sigma) and 135 arcmin(2) to J = 25.3 (4 sigma). We find that infrared data longwards of 2 mu m are essential for classifying optical dropout sources, and in particular for identifying cool Galactic star contaminants. Our limits on the number density of high-redshift sources are consistent with current estimates of the Lyman break galaxy luminosity function at z = 6.
引用
收藏
页码：370 / 376
页数：7
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