01 November 2001 CfA Colloquium


Title: The Cosmic Infrared Background Resolved with ISOCAM Deep Surveys

Speaker: Catherine Cesarsky

Abstract:

ISOCAM deep surveys at 15 microns revealed a rapidly evolving population of galaxies, with a median redshif of 0.7-0.8 in which star formation is proceeding at a rapid rate (Starburst galaxies, Luminous Infrared Galaxies and Ultra Luminous Infrared Galaxies). Based on correlations between the mid infrared emissions of galaxies and their output at other frequencies, I will show that these galaxies are likely to be the main contributors to the Cosmic Infrared Background.  I will discuss the consequences for the evolution of the global rate of star formation in the universe.

References for students:

R. Genzel and C. Cesarsky "Extragalactic results from the Infrared Space Observatory" - Annu. Rev. Astron. Astrophys. 2000. 38:761-814

C. Cesarsky and M. Sauvage "A Mid and Far Infrared View of Galaxies" - Astrophysics and Space Science 269-270: 303-319, 1999 (Kluwer Academic Publishers)

Lunch with the students will be on Friday, November 2 at 12:00 in A-101.