![trainz simulator 12 atls trainz simulator 12 atls](https://i5.walmartimages.com/asr/49b15a9e-2578-42af-99f3-63b602b96bde_1.b55fd0c0bab3844f4f10fb281a9c84ef.jpeg)
Our identifications are matched to UV–NIR photometry from the GAMA survey, and these data are available as part of the Herschel–ATLAS public data release.
![trainz simulator 12 atls trainz simulator 12 atls](http://images.n3vgames.com/trainzportal/mytrainz/120837/screenshots/79317/1000/Using-Maddy25-yarn-intersection-with-atls-traffic-lights..jpg)
We also suggest a method for selecting populations of strongly lensed high-redshift galaxies.
![trainz simulator 12 atls trainz simulator 12 atls](https://i.ytimg.com/vi/E0EBWuS2zEE/hqdefault.jpg)
Those with reliable optical identifications have a redshift distribution peaking at z ≈ 0.25 ± 0.05, while submillimetre colours suggest that a significant fraction with no counterpart above the r-band limit have z > 1. We estimate the completeness of identifying counterparts as a function of redshift, and present evidence that 250-μm-selected Herschel–ATLAS galaxies have a bimodal redshift distribution. We have estimated photometric redshifts for each of these 2423 reliable counterparts, while 1099 also have spectroscopic redshifts collated from several different sources, including the GAMA survey.
#Trainz simulator 12 atls full#
This is approximately 37 per cent of the full 250-μm catalogue. Applying a likelihood ratio technique we are able to identify 2423 of the counterparts with a reliability R > 0.8. Of the 6621 250 μm > 32-mJy sources in our science demonstration catalogue we find that ∼60 per cent have counterparts brighter than r = 22.4 mag in the Sloan Digital Sky Survey. We present a technique to identify optical counterparts of 250-μm-selected sources from the Herschel–ATLAS survey.