The Evolution of Lyman Break Galaxies Between z=1.5 and z=5.0

Details The Evolution of Lyman Break Galaxies Between z=1.5 and z=5.0 The Evolution of Lyman Break Galaxies Between z=1.5 and z=5.0

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21924625h&link_type=abstract

American Astronomical Society, AAS Meeting #219, #246.25

Astronomy and Astrophysics

Astronomy

Scientific paper

The high sensitivity of the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope has made it possible to identify and study Lyman break galaxies (LBGs) at z>7, when the universe was only about 650 Myr old. However, it is very difficult to understand the details of their stellar populations using current space and ground-based telescopes. Their great distances and faint fluxes make it extremely difficult for any kind of spectroscopic studies, and the limited high resolution photometry also makes it challenging to investigate their Spectral Energy Distributions (SEDs). The peak epoch of global star-formation rate, z=1.5-3.0, is now accessible with the WFC3 UVIS channel and is not affected by above mentioned limitations. The accuracy of the SED fitting with a large number of photometric data points including rest-frame optical observations, will tremendously increase our physical understanding of LBGs. We will present results from our SED analysis of LBGs at z=1.5-5.0 and infer possible evolutionary trends by comparing their physical properties such as stellar mass, stellar age, dust attenuation, and star-formation rate.
This work is based on Early Release Science observations made by the WFC3 Scientific Oversight Committee. We are grateful to the Director of the Space Telescope Science Institute for awarding Director's Discretionary time for this program. Support for program #11359 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.

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