CfA Colloquium Schedule Fall 2010
 2 December 2010

2 December 2010

Speaker: Rychard Bouwens (Leiden)

Title:Galaxy Build-up and Evolution at z>=7: Early results from ultra-deep WFC3/IR observations over the HUDF and GOODS fields

Abstract:The new WFC3/IR camera aboard HST enables us to survey the sky in the near-IR 40x more efficiently than ever before -- permitting us to make enormous strides in our searches for z>=7 galaxies. Already in the first year of observations, we have deep and ultra-deep observation over 52+ arcmin**2 in legacy fields like the HUDF and GOODS. With these data, we have been able to select 80+ z~7 galaxies, 50+ z~8 galaxies, and even possible z~10 galaxies. These new selections have allowed us to quantify the evolution of the UV LF and faint-end slope from z~10, significantly constrain the stellar populations and dust properties of z~5-8 galaxies, and construct a general picture of how galaxies build up early in the universe. In this presentation, I provide a summary of some of our early results.

Video of the Presentation (Talks can be viewed with RealPlayer. Free download is available from )


Section Photo