VIMOS-VLT深入调查：第一阶段数据中至z=2星系光度函数的演化
天体物理学
2010-11-04 v3
摘要
我们研究了从VIMOS-VLT深入调查（VVDS）所得到的星系光度函数演化，从当前时代演化到z=2，涉及五个（U、B、V、R和I）波段的光度。我们采用11,034个光谱的第一阶段VVDS深入样本进行分析，该样本选取于17.5 <= I_{AB} <= 24.0的范围内，并应用本文所述的光度函数算法（ALF）。我们观察到所有波段中全局光度函数随红移的显著演化。从z=0.05到z=2，我们测得特征 magnitudes M*在U、B、V、R和I波段的光度范围分别为1.8-2.5、1.7-2.4、1.2-1.9、1.1-1.8和1.0-1.6。我们通过测量明亮星系（M < M*(z=0.1)）的合围密度，确认了光度函数随波长的差别演化。该密度在U、B、V、R、I波段分别在z=0.05和z=1之间分别增加约2.6倍、2.2倍、1.8倍、1.5倍和1.5倍。我们还测得了光度函数暗端斜率可能的变细化，z=0.05到z=1之间Δα ~ -0.3，所有波段均呈现类似变化。
引用
@article{arxiv.astro-ph/0409134,
title = {The VIMOS-VLT Deep Survey: Evolution of the galaxy luminosity function up to z=2 in first epoch data},
author = {O. Ilbert and L. Tresse and E. Zucca and S. Bardelli and S. Arnouts and G. Zamorani and L. Pozzetti and D. Bottini and B. Garilli and V. LeBrun and O. Le Fèvre and D. Maccagni and J. -P. Picat and R. Scaramella and M. Scodeggio and G. Vettolani and A. Zanichelli and C. Adami and M. Arnaboldi and M. Bolzonella and A. Cappi and S. Charlot and T. Contini and S. Foucaud and P. Franzetti and I. Gavignaud and L. Guzzo and A. Iovino and H. J. McCracken and B. Marano and C. Marinoni and G. Mathez and A. Mazure and B. Meneux and R. Merighi and S. Paltani and R. Pello and A. Pollo and M. Radovich and M. Bondi and A. Bongiorno and G. Busarello and P. Ciliegi and Y. Mellier and P. Merluzzi and V. Ripepi and D. Rizzo},
journal= {arXiv preprint arXiv:astro-ph/0409134},
year = {2010}
}
备注
17 pages, accepted for publication in Astronomy & Astrophysics