Astronomy and Astrophysics – Astronomy
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.4304b&link_type=abstract
American Astronomical Society Meeting 204, #43.04; Bulletin of the American Astronomical Society, Vol. 36, p.729
Astronomy and Astrophysics
Astronomy
Scientific paper
The deep multiwavelength data over the wide-area GOODS and deep UDF (plus ACS and NICMOS UDF-parallel fields) provide an unprecedented data set from which to study the extragalactic universe. Combining the optical and infrared data available from these fields, we have derived large statistically-significant samples of dropout galaxies. These characterize galaxy properties to z 6, and beyond, with useful constraints to z 10, allowing conclusions to be drawn about global trends in galaxy formation and evolution during the first few billion years of the universe. We will discuss the evolution of the luminosity density, size and UV color, and characterize changes in the luminosity function and the star formation rate density--using sophisticated cloning simulations to establish high-redshift expectations and cope with the formidable selection biases ( 180x increase in surface brightness dimming from z 2 to z 10). While early results from the GOODS + UDF parallel data sets point toward modest increases in the star formation rate, size, and reddening from z 6 to z 2, data available with the UDF and its associated fields will push these trends to fainter magnitudes and even higher redshift. We summarize the early results.
ACS GTO Team
Bouwens Rychard J.
Illingworth Garth D.
Thompson Rodger I.
UDF NICMOS Team
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