How can the James Webb Space Telescope measure First Light, Reionization, and Galaxy Assembly?

Details How can the James Webb Space Telescope measure First Light, Reionization, and Galaxy Assembly? How can the James Webb Space Telescope measure First Light, Reionization, and Galaxy Assembly?

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20711503w&link_type=abstract

American Astronomical Society Meeting 207, #115.03; Bulletin of the American Astronomical Society, Vol. 37, p.1350

Biology

Quantitative Biology

Quantitative Methods

Scientific paper

In this poster, we first briefly review the capabilities of the 6.5 meter James Webb Space Telescope (JWST) --- slated for launch to a halo L2 orbit in 2013 --- including the considerations to make this an optimized infrared telescope that can deploy automatically in space.
The main science themes of JWST are to measure First Light, Reionization, Galaxy Assembly, as well as the process of Star-formation and the origin of Planetary Systems. In this poster, we will summarize how the JWST will go about measuring First Light, Reionization, and Galaxy Assembly, building on lessons learned from the Hubble Space Telescope.
We will show what more nearby galaxies observed in their restframe UV--optical light will likely look like to JWST at very high redshifts, and discuss quantitative methods to determine structural parameters of faint galaxies in deep JWST images as a function of cosmic epoch. We will also discuss to what extent JWST's short wavelength performance --- which needed to be relaxed in the latest definition of the telescope --- may affect JWST's ability to accurately determine faint galaxy parameters.
Space permitting, we will also discuss if ultradeep JWST images will run into the natural confusion limit, and what new generations of algorithms may be needed to automatically detect objects in very crowded, ultradeep JWST fields.
This work was funded by NASA JWST Interdisciplinary Scientist grant NAG5-12460 from GSFC.

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