Chandra Deep Field South: the optically faint population

被引：0
作者：
Mainieri, V
Rosati, P
Nonino, M
Szokoly, G
Bergeron, J
Hasinger, G
Lehmann, I
Tozzi, P
机构：
[1] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy
[2] European So Observ, D-85748 Garching, Germany
[3] Osserv Astron Trieste, I-34131 Trieste, Italy
[4] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[5] Inst Astrophys, F-75014 Paris, France
来源：
ASTRONOMISCHE NACHRICHTEN | 2003年 / 324卷 / 1-2期
关键词：
galaxies : active; surveys; X-rays;
D O I：
10.1002/asna.200310006
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A not negligible fraction (similar to 15%) of X-ray sources detected in the 1 Msec observation of the Chandra Deep Field South (CDFS) are not detected down to Rsimilar or equal to 27. however they are registered in deep near-IR imaging. We use deep multicolor photometry from the VLT (FORS+ISAAC instruments), covering a broad wavelength range, to discuss the adequacy of such techniques for X-ray selected sources and to constrain the nature of this optically faint population.
引用
收藏
页码：20 / 23
页数：4
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