Optical (VRI) photometry in the field of the galaxy cluster AC 118 at z = 0.31
Optical (VRI) photometry in the field of the galaxy cluster AC 118 at z = 0.31
复制标题
星系团 AC 118 z = 0.31 场中的光学 (VRI) 光度测量
DOI：
10.1051/0004-6361:20020624
复制
发表时间：
2002
影响因子：
6.5
通讯作者：
M. Capaccioli
中科院分区：
文献类型：
--
作者：
G. Busarello;P. Merluzzi;F. L. Barbera;M. Massarotti;M. Capaccioli
我们提供了丰富星系团 AC 118 在 z = 0.31 处的新光度 V、R 和 I 波段数据。新的光度测量覆盖 8.6 x 8.6 arcmin 2 的区域，对应于 2.9 x 2.9 Mpc 2 （H 0 = 50 km s - 1 Mpc - 1 ，qo = 0.5 且 A = 0）。这些数据是为一个旨在通过颜色-星等关系和基本平面研究星系演化的项目收集的。我们提供一个目录，其中包括在聚类字段中检测到的所有源 (N = 1206)。星系样本完整至 V = 22.8 mag (N g a l = 574)、R = 22.3 mag (N g a l = 649) 和 I = 20.8 mag (N g a l = 419)。我们给出 4.4 角秒的固定孔径内的孔径星等和克朗星等。我们还提供 459 个光源的光度红移，这些光源可提供额外的 U 和 K 波段光度测量。我们推导并讨论了 V 和 R 波段光度函数。该目录以电子形式分发，旨在作为研究星系演化的工具。
We present new photometric V-, R- and I-band data for the rich galaxy cluster AC 118 at z = 0.31. The new photometry covers an area of 8.6 x 8.6 arcmin 2 , corresponding to 2.9 x 2.9 Mpc 2 (H 0 = 50 km s - 1 Mpc - 1 , qo = 0.5 and A = 0). The data have been collected for a project aimed at studying galaxy evolution through the color-magnitude relation and the fundamental plane. We provide a catalogue including all the sources (N = 1206) detected in the cluster field. The galaxy sample is complete to V = 22.8 mag (N g a l = 574), R = 22.3 mag (N g a l = 649) and I = 20.8 mag (N g a l = 419). We give aperture magnitudes within a fixed aperture of 4.4 arcsec and Kron magnitudes. We also give photometric redshifts for 459 sources for which additional U- and K-band photometry is available. We derive and discuss the V- and R-band luminosity functions. The catalogue, which is distributed in electronic form, is intended as a tool for studies in galaxy evolution.