ISOCAM deep surveys unveiling star formation in the mid-infrared

被引：0

作者：

Elbaz, D ^{[1
]}

Aussel, H ^{[1
]}

Baker, AC ^{[1
]}

Césarsky, CJ ^{[1
]}

Clements, DL ^{[1
]}

Désert, FX ^{[1
]}

Fadda, D ^{[1
]}

Franceschini, A ^{[1
]}

Puget, JL ^{[1
]}

Starck, JL ^{[1
]}

机构：

[1] CEA, DSM, DAPNIA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France

来源：

34TH LIEGE INTERNATIONAL ASTROPHYSICS COLLOQUIUM - THE NEXT GENERATION SPACE TELESCOPE SCIENCE DRIVERS AND TECHNOLOGICAL CHALLENGES | 1998年 / 429卷

关键词：

cosmological surveys; mid-infrared; galaxy evolution;

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Before having exhausted the helium in its tank on April 8, 1998, the Infrared Space Observatory had time to perform several complementary surveys at various depths and areas within selected regions of the sky. We present the results of some of the surveys done with the mid-infrared camera, ISOCAM, onboard ISO, and more specifically those surveys which were performed using the broad-band filter LW3 (12-18 mu m). The counts obtained above 1 mJy by various surveys in the 12-18 mu m band are in good agreement with the no-evolution model. On the contrary, a strong evolution is observed in the counts below 1 mJy by deeper surveys. This evolution seems to be due to a population of star-forming or post starburst galaxies, whose optical properties are not very different from the galaxies in the field. This implies that most of the star formation is hidden by dust and appears in the infrared as redshift rises.

引用

页码：47 / 54

页数：8