期刊
ASTRONOMY & ASTROPHYSICS
卷 380, 期 2, 页码 425-434出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20011409
关键词
galaxies : distances and redshifts, evolution, ISM, intergalactic medium; methods : data analysis; techniques : photometric
We use the deepest and most complete redshift catalog currently available (the Hubble Deep Field (HDF) North supplemented by new HDF South redshift data) to minimize residuals between photometric and spectroscopic redshift estimates. The good agreement at z(spec) < 1.5 shows that model libraries provide a good description of the galaxy population. At z(spec) 2.0, the systematic shift between photometric and spectroscopic redshifts decreases when the modeling of the absorption by the interstellar and intergalactic media is refined. As a result, in the entire redshift range z is an element of [0, 6], residuals between photometric and spectroscopic redshifts are roughly halved. For objects fainter than the spectroscopic limit, the main source of uncertainty in photometric redshifts is related to photometric errors, and can be assessed with Monte Carlo simulations.
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