作者: S Buttiglione , Barry Madore , G De Zotti , G De Zotti , R Tuffs
DOI: 10.1111/J.1365-2966.2011.18827.X
关键词:
摘要: We present a technique to identify optical counterparts of 250-μm-selected sources from the Herschel–ATLAS survey. Of the 6621 250 μm > 32-mJy in our science demonstration catalogue we find that ∼60 per cent have brighter than r = 22.4 mag Sloan Digital Sky Survey. Applying likelihood ratio are able 2423 with reliability R > 0.8. This is approximately 37 full 250-μm catalogue. estimated photometric redshifts for each these reliable counterparts, while 1099 also spectroscopic collated several different sources, including GAMA estimate completeness identifying as function redshift, and evidence 250-μm-selected Herschel–ATLAS galaxies bimodal redshift distribution. Those identifications distribution peaking at z ≈ 0.25 ± 0.05, submillimetre colours suggest significant fraction no counterpart above the r-band limit have z 1. method selecting populations strongly lensed high-redshift galaxies. Our matched UV–NIR photometry survey, data available part public release.