A Machine-Learning Method for Identifying Multiwavelength Counterparts of Submillimeter Galaxies
Fig. 1 Radio flux densities for all radio sources within the primary beams of the AS2UDS ALMA maps as a function of the corrected-Poissonian probability, pvalue (left), and the offset of these radio sources from the SCUBA-2 single-dish source position (right). In total, there are 404 radio sources within the ALMA maps in the UDS (open circles). Among these, 259 radio sources are matched to 268/695 ALMA SMGs within a radius of 1 6 (filled circles), including nine ALMA SMGs that have double radio counterparts. Hence, ~63% of radio sources within the ALMA maps correspond to counterparts of ALMA SMGs. We utilize the corrected- Poissonian probability, p-value, to estimate the likelihood of a radio source being the counterpart of a single-dish-detected submillimeter source. We show the fraction of counterparts of ALMA SMGs from all 404 radio sources within the ALMA maps as a function of p-value in the inset plot of the left panel. (Image by AN Fangxia)
This work by AN Fangxia has been published in The Astrophysical Journal.